#linuxcnc | Logs for 2017-01-22

[00:17:58] <Jymmm> CNC Router and laser $340 shipped - https://www.aliexpress.com/item/2015-New-GRBL-3-Axis-Pcb-Milling-cnc-Machine-1610-Diy-Wood-Carving-Mini-Engraving-Pvc/32553569537.html
[00:18:11] <skunkworks_> https://www.youtube.com/watch?v=X3sKTwfrtOE
[00:19:19] <Jymmm> skunkworks_: What is that, a mill?
[00:24:36] <skunkworks_> little compact 5 lathe
[00:37:57] <XXCoder> boo
[00:38:21] <XXCoder> Jymmm: thats actually not bad
[00:38:38] <XXCoder> somewhat 3d printer style
[00:41:00] <XXCoder> LOL Jymmm one of pics has middle finger
[00:48:31] <Jymmm> Yeah, it has some 3d printed parts (if the files for them were included that might be okey), but I tell you, if something like that was available when I got into this, I would buy for sure. Small investment to get stated with and out-of-the -box ready
[00:49:46] <Jymmm> Who is MacSomebody or another?
[00:49:51] <XXCoder> yeah use it to mill better parts or make better mill
[00:50:05] <Jymmm> it has laser too
[00:50:31] <Jymmm> et you could add 3d printer head as well
[00:50:33] <Jymmm> bet*
[00:50:45] <XXCoder> yeah
[00:50:46] <Wolf_> I don’t see that thing milling much of anything, might be ok engraving and laser (maybe)
[00:51:23] <XXCoder> though gantry style is kinda incompitable with 3d printer, but then pink did it with larger steel-milling machine.
[00:51:50] <Wolf_> need more z travel for printing
[00:51:51] <Jymmm> Wolf_: has wood examples forther down
[00:52:30] <Jymmm> 14 lbs, not bad at all
[00:52:36] <Wolf_> I only see engraving samples
[00:53:29] <XXCoder> dont those 3d profile stuff count?
[00:53:46] <Wolf_> I kinda want a desktop laser, but would probably get one of the $400ish ones from amazon
[00:54:41] <Jymmm> XXCoder: Those are kinda referred to as 2.5D
[00:54:48] <XXCoder> indeed
[00:55:13] <Wolf_> http://a.co/35LExhv
[00:55:15] <Jymmm> but it could do PCB
[00:56:42] <XXCoder> wolf I saw review of one of those
[00:56:52] <XXCoder> guy had to rebuild whole thing
[00:57:30] <Wolf_> yeah, they need much fuckery to get working but they arent the worst thing in the world if you aren’t expecting it to work out of the box
[00:58:46] <XXCoder> https://www.aliexpress.com/item/CO2-Laser-Engraving-Machine-900mm-600mm-Single-Head-Laser-Cutting-Machine-Spare-Parts/32617676290.html
[00:58:48] <XXCoder> interesting
[00:58:48] <Jymmm> Wolf_: Yeah, Nooooooooooo! --> 1 x USB Key
[00:59:36] <Jymmm> Wolf_: If yu want it KNOWING you'll retrofit it, sure go ahead
[00:59:45] <Wolf_> yeah, pull the board and drop a grbl or smoothy in it
[01:00:05] <Jymmm> But that manual control for power is rough
[01:00:51] <Jymmm> There are retrofit digital controls you can get
[01:01:00] <Wolf_> umm XXCoder, thats just a frame w/ out a laser tube
[01:01:05] <XXCoder> I know
[01:01:11] <XXCoder> interesting though
[01:01:29] <Wolf_> $1300 for like 200 in parts
[01:01:52] <XXCoder> hmm true
[01:01:57] <XXCoder> and 300 bucks h
[01:01:58] <XXCoder> *sh
[01:02:08] <Wolf_> maybe $500
[01:02:21] <Jymmm> Wolf_: Also, verify if it's 220V or 110V
[01:02:47] <Wolf_> amazon ones are 110v
[01:03:31] <XXCoder> what watts laser would be able to make nice engrave on wood plastics?
[01:03:57] <Wolf_> 40w will cut 3mm wood/acrylic single pass
[01:04:25] <Wolf_> at least after you put a air assist on it
[01:05:50] <Wolf_> do a youtube search for K40 and you’ll see what they can do
[01:05:57] <Jymmm> Heh. my 35W can cut 1/4" wood, without air
[01:05:59] <Wolf_> k40 laser
[01:06:16] <Wolf_> single pass? or multi?
[01:06:23] <Jymmm> single
[01:06:45] <Wolf_> hmm
[01:07:44] <XXCoder> https://www.youtube.com/watch?v=qai3tp4cMgI
[01:08:32] <XXCoder> laser doide?
[01:08:48] <Wolf_> k40 are co2 glass tube
[01:09:54] <XXCoder> how do it send laser in, just shine it to head which refects it down?
[01:10:15] <Wolf_> 3 mirrors
[01:10:16] <Jymmm> XXCoder: two mirrors
[01:10:29] <Jymmm> on left sside
[01:10:38] <XXCoder> I think I see it
[01:10:39] <Wolf_> you missed the back one in the case :P
[01:10:41] <Jymmm> one visible, one behind the backside
[01:11:00] <Jymmm> I don't include the collimator
[01:12:20] <Wolf_> should be able to make it a lcnc controlled box as well right
[01:12:21] <Jymmm> Whats fucked up about that video is 1) it was foam board that was being cut. 2) it didn't cut all the way thru.
[01:16:08] <Jymmm> XXCoder: See the mirror on the left side in a "45 degree angle" ? https://www.youtube.com/watch?feature=player_detailpage&v=FJeyG0Xxjxg#t=689
[01:16:25] <XXCoder> yeah
[01:17:14] <Wolf_> https://www.aliexpress.com/item/CO2-Laser-Engraving-Machine-900mm-600mm-Single-Head-Laser-Cutting-Machine-Spare-Parts/32617676290.html actually has the 2 mirrors and the cutting head w/ air assist
[01:17:32] <Wolf_> well, the mirror holders anyways
[01:35:35] <Jymmm> Damn, I wish I could find a lithium charger/PS module =(
[02:43:53] <Deejay> moin
[03:28:23] <SpeedEvil> Jymmm: what do you mean
[03:28:40] <SpeedEvil> http://www.ebay.co.uk/itm/5V-Micro-USB-1A-18650-Lithium-Battery-Charging-Board-Charger-Module-Protection-/371152022965
[03:33:07] <archivist> I wish the chinesium chips had better data sheets
[03:36:07] <archivist> I want to measure an LVDT single ended output with a HX711 bridge input, methinks instrumentation amp
[04:18:07] <elektrinis> hi
[04:18:29] <elektrinis> is there a way to add a tool changer to my chinese 1.5kW spindle
[04:18:31] <elektrinis> ?
[04:18:35] <elektrinis> manual is ok
[04:19:25] <archivist> yes with some cleverness
[04:19:46] <elektrinis> is there a ready to use adapter of some kind available?
[04:21:53] <archivist> I have seen some add ons like http://www.ebay.co.uk/itm/Auto-Tool-Changer-ATC-for-Kress-1050-1050-1-800-530-800Q-CNC-/222038113225
[04:22:35] <elektrinis> 1k£ ;-)
[04:22:36] <archivist> others add some form of draw bar and belville springs
[04:24:26] <archivist> see also how tormach does it
[04:25:08] <XXCoder> well elektrinis
[04:25:13] <XXCoder> you could go other way
[04:25:19] <XXCoder> automate the tool length measurement
[04:25:33] <maxiter> has someone good experience with linuxcnc on Dell Optiflex 780 (Intel Core 2 Duo E8400 3GHz 4 GB DDR Ram)?
[04:26:08] <elektrinis> well, automation is also an option
[04:28:47] <archivist_> here is tooling that fits tormach I think http://www.ebay.co.uk/itm/281722204251
[04:29:56] <elektrinis> but they really love making 500x profit from low volume production.
[04:30:09] <elektrinis> 5x*
[04:31:35] <XXCoder> low volume tend to mean more expensibve
[04:31:40] <XXCoder> but yeah
[04:33:39] <elektrinis> usually what you do is make low volume at a loss to build up sales, and then you scale and drop your costs, maintaining same RRP
[06:08:17] <MacGalempsy> hello
[06:08:28] <XXCoder> Ahh!
[06:08:30] <XXCoder> whats up
[06:08:51] <MacGalempsy> just laying here bored
[06:08:55] <MacGalempsy> u?
[06:09:11] <XXCoder> just bored too heh
[06:09:26] <MacGalempsy> about to make coffee and do the 8min abs
[06:09:28] <MacGalempsy> lol
[06:09:47] <XXCoder> 8 min 3d print eh
[06:10:03] <MacGalempsy> lol. something like that.
[06:10:27] <MacGalempsy> wife was snoring and the dogs crowding me
[06:11:22] <MacGalempsy> u a gamer by chance?
[06:11:59] <XXCoder> former sadly
[06:12:10] <XXCoder> my brain got sucky and made me izzy most games
[06:13:13] <MacGalempsy> my hand recently started getting pains, so im slowing down for a bit
[06:13:57] <MacGalempsy> i think my hands are too big for the std controllers
[06:15:54] <XXCoder> strangler hands heh
[06:16:32] <MacGalempsy> nah... i couldnt strangle anyone :)
[06:16:40] <XXCoder> lol
[06:17:36] <MacGalempsy> what else do you like to do than cnc?
[06:18:26] <XXCoder> lego but havent really built anything for while so its on hold
[06:18:51] <MacGalempsy> pics?
[06:19:16] <XXCoder> not too sure where pics are lol been a while
[06:19:51] <MacGalempsy> lol. what do you think was the coolest?
[06:20:32] <XXCoder> http://img.bricklink.com/myImg/305095.jpg
[06:20:54] <XXCoder> middle is stock, other 2 is mod
[06:21:02] <MacGalempsy> funny
[06:21:14] <XXCoder> it gets... expensive to make green one
[06:21:19] <XXCoder> I cheated
[06:21:35] <XXCoder> 2x8 bricks was impossible
[06:21:46] <XXCoder> so I decided to get green 2x8 plates... 3 of em
[06:22:05] <MacGalempsy> y is green so rare?
[06:22:11] <XXCoder> because its green
[06:22:14] <MacGalempsy> oh
[06:22:19] <XXCoder> huge demend for yards so on
[06:22:26] <MacGalempsy> oh ic
[06:22:32] <XXCoder> and not that many sets has 2x8 bricks in green
[06:23:21] <MacGalempsy> ever since the patent expired, im surprised there are not more knock offs
[06:23:35] <XXCoder> its not very easy to do
[06:23:49] <XXCoder> lego has sig fig for molds - of 7 digits
[06:24:05] <MacGalempsy> the undersides are angled
[06:24:06] <XXCoder> thats 3 more than most accurate parts I make at work
[06:24:18] <XXCoder> .0000001mm
[06:24:23] <MacGalempsy> wow
[06:24:51] <XXCoder> megablok is far less accurate, thats why you can really feel difference
[06:26:06] <MacGalempsy> you would need 1:10,000,000 encoders!
[06:26:19] <XXCoder> I do wonder about that
[06:26:36] <XXCoder> they probably do many passes of spring cut
[06:27:04] <MacGalempsy> mine is 1:50000 and i thought it a bit high. lok
[06:27:54] <MacGalempsy> the retired mold has like 4 blocks.
[06:32:48] <MacGalempsy> polishing the edm electrode is probably a pita
[06:33:22] <XXCoder> well I got little bit of design problem lol
[06:33:28] <jthornton> morning
[06:33:34] <XXCoder> I want to make plasric surface conductive
[06:33:40] <XXCoder> and wire to it
[06:33:44] <MacGalempsy> morning
[06:33:48] <XXCoder> but so far options is bad
[06:34:04] <XXCoder> foil is hard to make sure stay on surface and hard to wire for example
[06:34:12] <MacGalempsy> what about that conductive filament?
[06:34:22] <XXCoder> expensive
[06:34:53] <MacGalempsy> how about defroster repair paint?
[06:35:18] <XXCoder> not bad idea but how to make sure wire stays and not disconnect?
[06:35:39] <MacGalempsy> secure it the paint
[06:35:54] <MacGalempsy> then*
[06:36:53] <MacGalempsy> how big is the part?
[06:37:06] <XXCoder> not too large
[06:37:13] <XXCoder> 1.5 cm area
[06:37:28] <XXCoder> only thing that matters is that it stays in contact with other part
[06:37:30] <MacGalempsy> oh. that is small
[06:38:28] <MacGalempsy> make a clip around the lead, drill a hole, glue, then paint?
[06:38:56] <XXCoder> not bad idea
[06:39:25] <XXCoder> I also had another idea, based on probe design
[06:39:30] <XXCoder> dont have to wire other end
[06:39:41] <XXCoder> just make other end just conductive disk
[06:39:43] <MacGalempsy> a hypothesis is easier than practice.
[06:39:49] <XXCoder> and wired end is split in half
[06:39:57] <XXCoder> so when in contact both sides is connected
[06:40:11] <MacGalempsy> cool
[06:40:34] <MacGalempsy> lego project?
[06:40:34] <XXCoder> though I guess have to design new hardware for even better way
[06:40:52] <XXCoder> nah 3d printer, I have idea for new "limit switch"
[06:41:06] <XXCoder> since machine has anti-wobble decoupler x assembly can be lifted off
[06:41:23] <XXCoder> so it finds z=0 by just going down till it detches
[06:41:34] <elektrinis> where do I buy these extrusions at more reasonable prices?
[06:41:35] <elektrinis> http://www.ebay.co.uk/itm/V-Slot-Aluminium-Extrusion-Linear-Motion-Rail-3D-Printer-CNC-500x20x80mm-/221719820985
[06:41:41] <MacGalempsy> how about a hall effect detector?
[06:42:24] <XXCoder> my machine currently uses induction
[06:42:26] <MacGalempsy> no touch required
[06:42:46] <MacGalempsy> interference worries?
[06:43:13] <XXCoder> nah just trying a method where precisely point of nozzle is where location of surface is detected
[06:43:23] <XXCoder> and surface may not be conductive
[06:43:29] <MacGalempsy> elektrinis that seems like a good price
[06:43:44] <elektrinis> m, ok..
[06:43:51] <MacGalempsy> paint it first
[06:44:13] <MacGalempsy> where are u located?
[06:45:34] <XXCoder> cant paint because its print surface.
[06:46:29] <MacGalempsy> oh. making a mpcnc?
[06:47:05] <XXCoder> mpcnc?
[06:48:01] <MacGalempsy> mostly printable cnc from thingiverse
[06:48:06] <XXCoder> oh
[06:48:13] <XXCoder> nah its a upgrade for my 3d printer
[06:48:31] <XXCoder> induction is pretty nice but if my idea works it would be far more accurate
[06:48:52] <MacGalempsy> cool
[06:49:42] <MacGalempsy> why do endstops need to be so accurate?
[06:50:00] <XXCoder> well in case of Z, it also is a probe
[06:50:10] <XXCoder> it checks shape of surface and adjusts to it
[06:50:13] <XXCoder> so print is nice
[06:50:40] <MacGalempsy> i didnt realize the reprappers got that far
[06:51:09] <XXCoder> probing has been around for a bit apparently
[06:51:30] <MacGalempsy> active print probing?
[06:51:50] <XXCoder> it does a multi-point check on surface z height
[06:51:56] <archivist> random crap to accurate crap
[06:52:02] <MacGalempsy> oh. ok.
[06:53:38] <MacGalempsy> why not laser?
[06:53:47] <XXCoder> fancy
[06:54:19] <MacGalempsy> time of flight :)
[06:54:41] <MacGalempsy> im a fan of lidat
[06:54:45] <MacGalempsy> lidar
[06:55:08] <XXCoder> it cant check point where nozzle is in xy though
[06:56:42] <Frank_6> guys, if i want to add alarm input from a servo drive with the motmod module and pin: axis.N.amp-fault-in . which file should i be modifying to make a 7i76 pin for this fault? hal right?
[06:57:14] <MacGalempsy> opposing lidar range finders, angled and correction
[06:57:30] <MacGalempsy> yeh
[06:59:29] <MacGalempsy> something like net <fault name> axis.N.amp-fault-in <card address>
[07:00:27] <Frank_6> kay thanks
[07:00:31] <MacGalempsy> xxcoder: basically shooting under it
[07:00:48] <XXCoder> I suppose can do that but pretty complex
[07:01:05] <MacGalempsy> 150 per sensor
[07:01:19] <XXCoder> 150 usd? dang lol
[07:01:22] <MacGalempsy> and complex 2 way travel times
[07:01:29] <MacGalempsy> yeah. lol
[07:01:57] <MacGalempsy> they do work w a mega tho
[07:02:08] <XXCoder> https://www.geeksaresexy.net/wp-content/uploads/2016/01/eat2.jpg
[07:02:33] <elektrinis> Is there a disadvantage of lifted Y axis, like this?
[07:02:33] <elektrinis> http://i.imgur.com/QBfUHCJ.jpg
[07:02:54] <MacGalempsy> stupid kaletards
[07:03:02] <XXCoder> lol
[07:03:15] <XXCoder> elektrinis: less part clearance
[07:03:30] <XXCoder> stuff on way as you try to change part for example.
[07:03:52] <elektrinis> ok
[07:04:00] <elektrinis> it it should be stiffer, right?
[07:04:16] <XXCoder> possibly. expecually if you brace ends too
[07:04:17] <elektrinis> *rigid
[07:05:26] <MacGalempsy> the extrusions have flex. perhaps just welding a steel frame would be more stiff
[07:05:43] <XXCoder> more trangles
[07:05:56] <MacGalempsy> or reinforce the skeleton
[07:07:32] <XXCoder> trangles is easiest way to do that yeah
[07:11:35] <MacGalempsy> trangles?
[07:11:45] <XXCoder> tringles
[07:11:51] <XXCoder> cant spell it. 3 sided poly
[07:12:37] <MacGalempsy> ok
[07:14:18] <MacGalempsy> electrinis you building that machine?
[07:33:32] <elektrinis> not mine
[07:33:38] <elektrinis> but thinking of something similar
[07:36:10] <elektrinis> one more interesting
[07:36:11] <elektrinis> https://i.ytimg.com/vi/nvgk5kH8rPg/maxresdefault.jpg
[07:57:17] <jthornton> elderberry is bubbling like mad
[08:00:48] <XXCoder> toil for trouble ehj
[08:01:43] <jthornton> might have to put some anti-foam in the elderberry, the blush is not a violent
[08:02:18] <Frank_6> im modifying hal for the first time, im feeling so pro. im sure this will last so little until i F#@ up
[08:03:36] <XXCoder> not violent, just blue
[08:03:44] <XXCoder> ;)
[08:11:15] <jthornton> writing code to fit an image into a container as big as possible and maintain aspect ratio
[08:13:10] <Frank_6> anyone uses/knows a hal pin that makes me able to "reset/clear alarm" in case a driver sends an alarm to lcnc?
[08:13:48] <jthornton> reset your drive?
[08:15:44] <Frank_6> yes, which pin would allow me to do so
[08:16:04] <Frank_6> i dont want to power off/on the hole system
[08:18:06] <jthornton> you want the drive to be reset by magic or you press a reset button?
[08:18:14] <archivist> where is the alarm from, if drive then you are estoping linuxcnc, therefore use f1/f2 to re enable/bring it out of stop
[08:32:03] <Frank_6> you think that if i re enable the drive then the alarm goes away?
[08:37:50] <archivist> depends on reason etc, what does its manual say :)
[08:44:31] <Frank_6> well im sure it doesnt say speciffically that
[08:44:42] <Frank_6> specially when it has a clear alarm input
[08:45:11] <Frank_6> i dont think people use that input thou, at least with lcnc, i couldnt find much on the forum
[08:45:53] <jthornton> you could have a reset button after you see why the drive shut down
[09:13:25] <Frank_6> jthornton: yeah you are right maybe i can get a physicall switch to do it, not even on lcnc, easyer to setup, sorry for the late response, i was reading some manual
[09:16:11] <jthornton> you can add a pyvcp button easy
[09:57:29] <Gene_home> I was going to buy the following... but am open to alternate suggestions from the team http://www.ebay.com/itm/350462906539
[09:58:47] <jdh> I have one of those. It's a little too big for my needs (g0704) but works well enough for the price
[09:59:49] <BeachBumPete> might get a 1/2 inch set instead of the 3/4? I think they make a half inch set with a 2" head
[10:00:09] <Gene_home> excellent advise! I will be using it to make G0704 ballnut adapters soon if purchased
[10:00:21] <Gene_home> they do
[10:00:24] <jdh> heh, that's the only thing I have used mine for
[10:01:25] <Gene_home> Next item... must buy aluminum for CNC upgrade and am a newbie. was looking at Aluminum 6061 from http://www.onlinemetals.com/basket.cfm
[10:01:36] <Gene_home> any other suggrestions
[10:01:50] <jdh> onlinemetals.com
[10:02:01] <jdh> one is usually cheaper with shipping
[10:02:57] <Gene_home> any other words of wisdom?
[10:03:09] <jdh> measure once, cut twice
[10:03:38] <Gene_home> jdh, can you show a picture of your setup?
[10:03:46] <jdh> what part
[10:03:55] <Gene_home> g0704
[10:03:55] <BeachBumPete> might also consider shopping for aluminum on ebay I get some good deals there
[10:04:13] <jdh> mcmaster also has aluminum, amazon does, or did.
[10:04:14] <BeachBumPete> typically shipping included pricing
[10:05:31] <jdh> Gene_home: https://goo.gl/photos/QnRwBfBdhH5Eu3jv6
[10:05:51] <Gene_home> I tried Speedymetals.com and ebay onlinemetalsupply, however on onlinemetals had better pricing
[10:06:15] <jdh> I meant to type speedymetals above
[10:06:44] <BeachBumPete> not for me they didn't at least not always
[10:07:01] <Gene_home> nice setup
[10:09:24] <Gene_home> I havent tore my machine down, it appears the ball screw flange width and pocket fitment is not critical since I see two adjustment screws. Is this correct for both X and Y?
[10:09:57] <jdh> no idea what you mean.
[10:10:17] <Gene_home> https://photos.google.com/share/AF1QipOPlG3JdVxrpabEn1OGjwo2hANiiTuL_I5LCIp1tbneIVJMvBX-icZb7EwbiAqjAQ/photo/AF1QipNbEouoAZBtVuY4NpMA95eTXfYdxOiepGLt4EP_?key=ZlBqalQ3RndFYVZSMWR0dUQta1A0TjRIMllsOEln
[10:10:55] <jdh> I just eyeballed that pocket
[10:11:21] <jdh> those screws clamp the ballscrew mount in place
[10:11:36] <Gene_home> is that the same design for both X and Y?
[10:11:44] <jdh> no, just Y
[10:12:03] <Gene_home> does the X have to be a perfect fit then?
[10:12:20] <jdh> there is enough from for X as is. You could relieve some space to get a bit more travel
[10:13:06] <jdh> I used the Hoss plans. he has pics and sufficiently detailed drawings
[10:14:41] <Gene_home> My appology, I am not asking about travel, or the shallow pocket. I am asking about the hole that goes completely threw the casting in this image. specifically removal of backlash. I see two adjustment screws for this axis to clamp the ballscrew tightly. Is this true for both X and Y. Thanks!
[10:16:05] <jdh> yes, there are two screws for each axis
[10:16:39] <Gene_home> awesome and thankyou, I watched many videos but no one provided a view or insight
[10:16:43] <jdh> the slot just needs to be big enough for the ballnut mount to fit in. It can be oversized a little in each direction
[10:17:46] <jdh> I made the first set of mounts out of Delrin on my router, then made new ones from 6061 on the G0704
[10:18:20] <Gene_home> I have printed most of the parts just to get a warm fuzzy also
[10:19:29] <Gene_home> I was planning on buying two of these and make a T shaped tramming devise http://www.ebay.com/itm/300625789752
[10:20:07] <Gene_home> can you recommend other dial indicators for aligning the table, vise, etc?
[10:20:56] <jdh> univeral DTI mount & DTI
[10:20:57] <sync_> just use an indicator holder in the spindle
[10:21:20] <Gene_home> I am a newbie, can you provide links?
[10:21:41] <jdh> the last time I trammed mine, I did it while sizing a chunk of aluminum and a face mill
[10:22:21] <jdh> http://www.grizzly.com/products/Universal-Indicator-Holder/G9629
[10:22:44] <Gene_home> we have one of those at work.... now I know what it is :)
[10:23:15] <jdh> with a dial test indicator, good for sweeping work or vise for alignment
[10:23:42] <Gene_home> any other items I should consider in the short term?
[10:24:03] <jdh> vise, cutting tools
[10:24:05] <jdh> clamps
[10:24:21] <sync_> precision square
[10:25:26] <Gene_home> yes! excellent
[10:26:04] <OSR_Dragon> another suggestion... a local mentor ;)
[10:26:19] <Gene_home> for some reason I am trying to justify a dial indicator that fits in a collet to align table etc? am I off the deep end?
[10:26:36] <OSR_Dragon> find an old timer from a local machine shop and pick his brains
[10:26:37] <Gene_home> I have some, but time is limited
[10:26:47] <Wolf_> you can mod the indicator holder
[10:27:10] <Wolf_> or get a old starrett last word kit for the holders
[10:27:43] <Gene_home> you are speaking greek again....
[10:28:04] <sync_> http://www.noga.com/prdPics/NF60103_prd_big_picture_1.jpg I use one of those in the spindle
[10:28:35] <sync_> but you can also make one yourself
[10:28:45] <Gene_home> we have magnet type similar
[10:29:26] <jdh> I ended up mounting the G0704 on one of their mobile bases also.
[10:29:35] <sync_> you can use a small magnet base on the spindle as well, it is not that critical
[10:29:51] <Wolf_> noga base is nice
[10:31:02] <Wolf_> http://i.imgur.com/khb7jcn.jpg < one of my favorites and http://i.imgur.com/NPEnNpR.jpg is meh but holders in it are handy
[10:31:07] <OSR_Dragon> or unscrew the rod from a magnet base and chuck it in the spindle
[10:31:53] <Gene_home> the light bulb has come on. many thanks!
[10:32:07] <sync_> that is not good for the thread, I made an adapter just for that
[10:32:15] <archivist> get 1/4 rod make any indicator mount
[10:32:27] <sync_> but now I just put the magnet on the face of the spindle
[10:32:31] <Gene_home> http://www.ebay.com/itm/SHARS-030-Travel-0-0005-Dial-Test-Indicator-Universal-Pro-Magnetic-Base-NEW-/350840996260?hash=item51afc0c1a4:g:JEcAAOSw1KxXNdtl
[10:33:00] <OSR_Dragon> don't chuck the thread end, chuck the other end
[10:33:01] <Wolf_> cheap base + the quill mount and you can do odd stuff http://i.imgur.com/EdMjrYt.jpg
[10:34:42] <OSR_Dragon> I've got a question about servo drives... what are the disadvantages to using an analog input drive vs. a PWM input drive?
[10:35:05] <Wolf_> none
[10:35:19] <Wolf_> least that I know of
[10:35:28] <jdh> a little lag in pwm?
[10:37:47] <sync_> analog and pwm are the same in the end, you want something with digital comms and the position loop closed in the drive
[10:41:27] <OSR_Dragon> Ok... my experience so far with servos has primarily been with the Pico Systems stuff and with the Mesa 7i29
[10:42:07] <OSR_Dragon> I'm now working on a couple of machines for home/hobby use and although I would love to use some 7i29s I am trying to save some $$$
[10:47:27] <malcom2073> I wanna run servos skmedya
[10:47:33] <malcom2073> Someday, wow... Slaughtered that.
[10:48:03] <Wolf_> that was sorta close…
[10:48:38] <OSR_Dragon> I managed to decipher it... but I am slightly dyslexic so maybe that helped
[10:49:18] <malcom2073> That was on my phone no less, autocorrect just gave up on that one
[10:49:25] <OSR_Dragon> servos are nice, I have been spoiled ;)
[10:50:30] <malcom2073> Steppers "just work", so I've always leaned towards them. If I ever make it big and have money servos are first on my list of stuff to upgrade on my mill.
[10:51:56] <OSR_Dragon> if you don't need new stuff with a waranty, you can set up a servo system for almost the same price I am finding
[10:52:58] <malcom2073> Yeah I keep hearing that, but I've yet to find it. Same price used/chinese as a new name brand stepper system? Sure.
[10:53:59] <malcom2073> My stepper system cost me around $400 all told. Just replacement drivers for the servos I was removing were like $250 each used
[10:54:20] <malcom2073> Plus a Mesa setup
[10:54:57] <malcom2073> If you've found a source for servos that is cheap, I'd love to hear about it :)
[10:55:13] <OSR_Dragon> so my machines aren't too big but I found used e661 servos for less than $50
[10:56:02] <OSR_Dragon> each that is
[10:56:25] <malcom2073> Drives and Mesa are what kill the price
[10:56:25] <Jymmm> SpeedEvil: That is a CHARGER ONLY. You can't have a load connected to it at the same time. Like an alarm power supply with battery backup; it runs of mains then has battery fallback, then charges the battery as well.
[10:56:39] <OSR_Dragon> I am currently looking at some AMC drives that have WAY more current capacity than needed but they are about $35 used and tested
[10:56:57] <Wolf_> my AMC drives were $80 each...
[10:57:41] <Wolf_> I still need a $227 power supply as well...
[10:57:43] <malcom2073> Yeah for small stuff it's probably almost worth it
[10:57:47] <Wolf_> and $300 worth of mesa
[10:59:13] <OSR_Dragon> I found transformers for my power supplies from a local industrial surplus place for $35 each and I think the rectifiers were about the same
[10:59:14] <malcom2073> My stepper drives were $30 each used heh
[10:59:21] <OSR_Dragon> got them from digikey
[10:59:30] <malcom2073> And they're 10amp
[11:00:09] <Wolf_> OSR_Dragon: that would almost work if I didn’t need 1500W 160v psu…
[11:00:34] <malcom2073> Wolf: you could build your own hehe
[11:00:45] <malcom2073> I tend to not touch high voltage DC though
[11:00:54] <Wolf_> big damn coil...
[11:01:28] <Wolf_> rather have something I don’t have to mess with for that reason as well
[11:01:29] <OSR_Dragon> Wolf_: yeah, my transformers only have 60v secondaries with 20v and 40v taps and are only 30A
[11:02:19] <OSR_Dragon> but I guess that is 1800kVA
[11:03:16] <SpeedEvil> probably not k
[11:03:20] <OSR_Dragon> I would almost have to have all 4 of the e661's running full bore on the mill to use that much though
[11:03:29] <SpeedEvil> Unless you have a rather big mill.
[11:03:42] <Wolf_> malcom2073 is right on the stepper setup, I have like $270 total in to the stepper/drivers/bob/psu
[11:05:05] <OSR_Dragon> I just get nervous not knowing if I have lost steps
[11:05:06] <Wolf_> took little time to get it working with lcnc also, hard part was getting all the lead screw slop out of the x1 lol
[11:05:20] <Wolf_> I just oversized the steppers
[11:05:32] <MacGalempsy> add feedback
[11:05:56] <malcom2073> Yeah I'm running way bigger steppers than I need heh
[11:06:01] <Wolf_> I found out by accident that it will drive the x axis right through a 3/8” end mill like its not there
[11:06:01] <OSR_Dragon> by the time you do that I can pay the difference for my scrounged/used servo stuff
[11:06:12] <malcom2073> Lol
[11:06:22] <MacGalempsy> lol
[11:06:38] <OSR_Dragon> lol... I can see myself doing that
[11:06:42] <malcom2073> It's a matter of priorities. I check my parts, so I'd know if it missed a step, and considering I can't afford servos that's a good thing :)
[11:06:43] <Wolf_> actually snapped the end mill off
[11:06:57] <MacGalempsy> the key to sucessful engineering is.....drum roll....over engineering
[11:07:47] <OSR_Dragon> the darn ballscrews are going to cost me more than any other single parts category
[11:07:55] <Wolf_> only reason I have servos is amateur move like 12+ yrs ago when I went nuts on ebay buying parts for a EMC cnc build when I had no idea what I was doing lol
[11:07:56] <SpeedEvil> OSR_Dragon: drawer slides.
[11:08:00] <SpeedEvil> (no, not really)
[11:08:21] <MacGalempsy> ha!
[11:09:15] <Wolf_> I got the drives for the servos in the last 4 months lol
[11:09:24] <MacGalempsy> threaded rod and drawer slides.
[11:09:44] <MacGalempsy> one step at a time
[11:09:59] <Wolf_> on the plus side I still have a stack of thk rails & trucks
[11:10:09] <Wolf_> no idea what to do with them lol
[11:10:49] <malcom2073> Lol
[11:10:58] <malcom2073> Wolf: I have all the rails for a 5x10 router
[11:11:09] <Wolf_> I should just build a mini plasma thing
[11:11:12] <OSR_Dragon> the knee on the mill will likely live with the acme screw for a while since it is pretty much alway preloaded
[11:11:49] <Wolf_> use some mag-switch blocks on a 2
[11:12:07] <Wolf_> 2’x2’ or w/ever size the rails are plasma cnc
[11:12:22] <MacGalempsy> sounds like hoarding syndrom
[11:12:49] <archivist> hoarding ++
[11:13:05] <Wolf_> lol, I bought the stuff then realized that I had no idea what I was doing and I didn’t own a milling machine at that point either
[11:13:05] <OSR_Dragon> hello, my name is OSR_Dragon and I am a hoarder
[11:13:19] <MacGalempsy> lol
[11:13:31] <archivist> my nick shows I admit hoarding
[11:13:57] <MacGalempsy> an elegant way of doing it
[11:14:09] <MacGalempsy> organized hoarding
[11:14:14] <Wolf_> I don’t call it hoarding, its unused inventory
[11:14:16] <Jymmm> MacGalempsy: Everything should be made as simple as possible, but not simpler. - Einstein
[11:14:45] <archivist> just had an email to dig in http://www.collection.archivist.info/shelfview.php?src=artitle&locid=568
[11:15:08] <MacGalempsy> good point Jymmm over engineering though does not specify the degree
[11:15:20] <Jymmm> MacGalempsy: CNC Router and laser $340 shipped - https://www.aliexpress.com/item/2015-New-GRBL-3-Axis-Pcb-Milling-cnc-Machine-1610-Diy-Wood-Carving-Mini-Engraving-Pvc/32553569537.html
[11:15:32] <Wolf_> archivist: you have a write up on the barcode thing? lol
[11:15:55] <archivist> Wolf_, never done one yet
[11:16:04] <MacGalempsy> wow. looks like a deal
[11:16:09] <OSR_Dragon> I am trying to reform myself... I have taken pickup loads from the garage to make room for the new machines
[11:16:22] <Jymmm> MacGalempsy: cheaper without the laser
[11:16:32] <Wolf_> I need to clean my garages…
[11:16:32] <archivist> store them in mooore sheds
[11:16:42] <MacGalempsy> barcode is raking it to a whole new level
[11:16:56] <OSR_Dragon> out of acrage
[11:17:23] <OSR_Dragon> the Mrs. wants to move though in the next couple of years ;)
[11:17:27] <Wolf_> my problem right now is big stuff in my shop blocking space…
[11:17:38] <archivist> MacGalempsy, it became necessary, finding time was rising
[11:17:46] <Wolf_> like a drive on alignment rack in one bay
[11:17:58] <MacGalempsy> how big is the laser?
[11:18:27] <Wolf_> that aliexpress, 2.5 china watts
[11:18:46] <OSR_Dragon> so it sounds like I can go with the AMC drives and save some $$... any suggestions on VFDs?
[11:19:02] <OSR_Dragon> would like to get something with a modbus driver in linuxcnc
[11:19:37] <MacGalempsy> jymmm what do you have in mind for a hello world project?
[11:19:38] <Wolf_> I’m actually wondering if I can just use a AMC drive to run a spindle BLDC motor lol
[11:19:44] <OSR_Dragon> I scored some 2hp 3 phase motors for spindle drives off of CL
[11:20:00] <OSR_Dragon> Wolf_: yes you can ;)
[11:21:09] <Wolf_> right now my plan is to use a BLDC sewing machine motor kit
[11:21:29] <Jymmm> MacGalempsy: whatever your imagination comes up with. Something for your gamer nephew you play with. badges, poker chips, signs, etc
[11:21:32] <Wolf_> just need to figure out how to fake the hall sensor pedal input
[11:21:46] <OSR_Dragon> Wolf_: if they are analog input drives and you are using Mesa you can grab a SPINx1
[11:22:04] <MacGalempsy> oh. i thought you ordered one, but you were ust showing.
[11:22:46] <Jymmm> MacGalempsy: Yeah, you said you were on a budget, so $150ish seemed reasonable and only 11lbs so portable
[11:22:54] <Jymmm> 11 lbs
[11:23:42] <MacGalempsy> he sure would like that. i started pulling extras from some the boxes and will start him off with a nano!
[11:23:46] <Jymmm> MacGalempsy: and it's a kit, so you two can built it together, then run it
[11:24:21] <MacGalempsy> start him off breaking cheap stuff first :)
[11:25:13] <MacGalempsy> he and my other nephew should be able to buy those w their xmas $
[11:28:20] <OSR_Dragon> are those GRBL controls compatible with linuxcnc?
[11:28:45] <Wolf_> I don’t think so
[11:30:31] <OSR_Dragon> I promised the wife that I would build her a portable jewelry engraver to take to craft shows once the mill was up and running
[11:31:07] <OSR_Dragon> that aliexpress unit interested me
[11:33:40] <Kevin`> OSR_Dragon: grbl is it's own g-code interpreter and motion controller. not as advanced as linuxcnc because of limited resources on the microcontroller but it works
[11:34:12] <Jymmm> OSR_Dragon: watch the video
[11:36:13] <Kevin`> don't expect to cut metal with an unregulated dc spindle btw. you'll chew up bits
[11:39:08] <OSR_Dragon> thanks 'guys'
[11:39:42] <OSR_Dragon> so are there any VFD recomendations in the 2-3hp range that have a linuxcnc modbus driver?
[11:49:53] <Kevin`> OSR_Dragon: modbus isn't usually failsafe unless you are independently controlling power input the the vfd. using an analog card output f/e the thing will shutoff when it loses communication
[11:50:06] <Kevin`> there's ways around it of course, just be aware
[12:01:54] <rene-dev> im getting this error on master, but cant figure out why
[12:01:55] <rene-dev> Missing <max linear speed> specifier
[12:01:55] <rene-dev> See the 'INI Configuration' documents
[12:04:50] <ktchk> Hi is there a how to for change the kinematic to bipodkins.c and the axis show two motors for hanging plotter??
[12:10:48] <Jymmm> Got old optical/floppy drives laying around... https://www.youtube.com/watch?v=cw3i7Ce4gIU
[12:11:29] <rene-dev> MAX_LINEAR_VELOCITY = 1.0 was missing in TRAJ
[12:11:42] <rene-dev> some example configs are missing it
[12:31:50] <malcom2073> Jymmm that's awesome
[12:31:58] <malcom2073> Totally useless, but cute.
[12:36:06] <Jymmm> malcom2073: Eh, repurpose whatcha got instead of just tossing it out. Great for kids to play around with and you dont care what happens to it
[12:36:25] <Jymmm> maybe MacGalempsy could do that
[12:36:33] <malcom2073> That's whatfigred, cheap post-it-note printer for the kids.
[12:36:40] <MacGalempsy> just watching it now
[12:36:48] <Jymmm> oh, nice idea on the post it note thing
[12:37:45] <Jymmm> leave a not for whoever from your phone
[12:37:50] <Jymmm> note*
[12:38:19] <Jymmm> just dont use a felt tip/rollerball pen =)
[12:38:23] <malcom2073> Haha yeah
[12:38:42] <malcom2073> I like the phone idea, make an app to go along with it
[12:38:46] <malcom2073> Could sell that :)
[12:39:01] <IchGucksLive> hi
[12:39:13] <IchGucksLive> its cold like in a freezer here in Germany
[12:39:18] <Jymmm> malcom2073: There ya go... have at it, just post the video is all I ask!
[12:39:41] <Jymmm> IchGucksLive: then get out of the freezer.. DUH
[12:40:14] <IchGucksLive> -8C ozside
[12:40:18] <malcom2073> Lol too many other projects
[12:40:56] <malcom2073> I'm milling right now
[12:41:20] <MacGalempsy> even a little laser would work
[12:41:46] * MacGalempsy making grits. mmmm
[12:41:57] <Wolf_> they sell those already, cd drive thing + blue laser
[12:43:41] <Wolf_> http://www.ebay.com/itm/282292228848
[12:47:14] <OSR_Dragon> Kevin`: ok, I got it. Sounds like I would be better off just using the analog input on the VFD then
[12:48:10] <Jymmm> Wolf_: take a look at videos for blue lasers before buying.
[12:48:42] <malcom2073> Hah, no drivers on that wolf
[12:48:53] <Wolf_> yeah, its cute but useless imo
[12:49:07] <Jymmm> not necessarily
[12:49:28] <Wolf_> 38mm x 38mm work area = useless to me
[12:49:48] <Wolf_> I dont need to put my name on toothpicks
[12:49:58] <Jymmm> you sure bout that
[12:50:15] <Wolf_> somewhat sure lol
[12:50:20] <malcom2073> Haha
[12:50:28] <malcom2073> Niche market there
[12:50:35] <malcom2073> Custom engraved toothpicks.
[12:50:47] <Wolf_> I have a feeling I’ll end up getting a k40 laser at some point soon
[12:50:54] <malcom2073> For the discerning redneck
[12:51:05] <Jymmm> Might be slick for a cocktail bar/club contest
[12:51:11] <Tom_itx> malcom2073, most of them have no teeth
[12:51:21] <Jymmm> like popsicle sticks with riddles/jokes on them
[12:53:02] <IchGucksLive> Gn8
[12:53:10] <Jymmm> https://img.buzzfeed.com/buzzfeed-static/static/2014-06/16/17/enhanced/webdr04/enhanced-20905-1402955328-6.jpg
[12:53:15] <IchGucksLive> getting fireing the oven for the night warm up
[13:03:33] <MacGalempsy> burnt business cards
[13:03:48] <MacGalempsy> that pop out and make a dino
[13:11:29] <Wolf_> wow, K40 lasers are cheaper then I thought, $350 shipped from USA on ebay
[13:12:16] <Jymmm> pop up business cards? https://s-media-cache-ak0.pinimg.com/736x/69/d2/93/69d293984f0c95d2c019463089fb2ebe.jpg
[13:12:56] <Jymmm> http://allfreedesigns.com/wp-content/uploads/2013/06/pop-up-business-cards-11.jpg
[13:13:07] <OSR_Dragon> can anyone help me out with the specs for an AMC 20AVR drive?
[13:14:39] <MacGalempsy> super cool jymmm
[13:14:40] <malcom2073> I thought about the k40, it's getting cheap enough that even if it's as crappy as they say, it's worth it for a year then throwaway
[13:15:38] <Wolf_> OSR_Dragon: http://www.a-m-c.com/support/reserved-discontinued-products.html?tab=1
[13:15:43] <MacGalempsy> try google?
[13:17:32] <MacGalempsy> https://www.epiloglaser.com/resources/sample-club/dinosaur-model-cutting.htm
[13:17:51] <MacGalempsy> really small trex w a std size business card
[13:18:18] <OSR_Dragon> both my google-foo and serch of the AMC site have failed me, that is why I asked
[13:18:55] <Wolf_> trick is figuring out the part number on the drive
[13:20:24] <MacGalempsy> you may try the waybackmachine
[13:20:39] <Wolf_> have a pic of the label on the driver?
[13:24:53] <Jymmm> MacGalempsy: https://blog.adafruit.com/2009/05/25/adafruit-business-cards-laser-cut-spirograph-cards/
[13:28:54] <Jymmm> Not laser, but kinda slick... https://www.youtube.com/watch?v=lcakOUh1XOs
[13:32:42] <MacGalempsy> yeah that is slick.
[13:35:23] <toner> wow, neat
[13:35:47] <Wolf_> OSR_Dragon: ok, that is a odd one, I can’t find much of anything on them except for more 20AVRC amps for sale
[13:39:18] <OSR_Dragon> yeah...
[13:39:33] <Wolf_> OSR_Dragon: maybe check the case for another part number or open it up and see what the board has on it
[13:40:05] <OSR_Dragon> I'm just looking at the ones on fleabay and wondering if they will work
[13:40:37] <OSR_Dragon> I found some 120a10 drives for a good price but I don't think they are going to handle the voltage
[13:40:58] <OSR_Dragon> the spec sheet says 20-80 with over volt protection at 90
[13:41:08] <Wolf_> it looks kinda similar to the BE25A20 that I’m using
[13:41:32] <OSR_Dragon> I just temporarily hooked up my transformers in the shop and I am getting 66v out of the secondary
[13:42:20] <OSR_Dragon> yeah, a 25a20 would be about perfect for what I need
[13:43:06] <Wolf_> well those are brush/brushless, with encoder inputs, 40-190v 25A
[13:43:57] <OSR_Dragon> I know, perfect as in just a bit oversized ;)
[13:44:16] <Wolf_> yeah, only 2.3kw @190v lol
[13:44:52] <OSR_Dragon> peak current on the servos is somewhere around 20-25A and I will likely be around 91-93v after the rectifier
[13:47:02] <MacGalempsy> did you try thewaybackmachine? it is an archive of most websites. sometimes you can find obsolete manuals
[13:47:13] <OSR_Dragon> that voltage will likely get me up around 150 IPM though. Not going to complain about that
[13:47:22] <OSR_Dragon> MacGalempsy: will do
[13:52:19] <MacGalempsy> i had good luck with it on some old encoders
[13:52:48] <MacGalempsy> like when a company got bought out and the old website disappeared
[13:55:29] <Jymmm> Fuck... garage flooded after last nights storm! *bite tongue*
[14:02:02] <OSR_Dragon> no love with wayback machine... went all the way back to '99 and couldn't find anything
[14:02:12] <OSR_Dragon> oh well... I keep looking
[14:02:45] <OSR_Dragon> I don't need drives until I get ball screws installed anyway
[14:03:10] <Wolf_> I like stocking parts as I find them
[14:03:21] <Wolf_> more so for ebay score stuff
[14:04:16] <Wolf_> glad I did that for the BE25A20 drivers because I don’t seem many on there for cheap right now
[14:06:59] <Wolf_> damn even the b25A20 are lacking on there right now
[14:07:12] <Wolf_> $130 is cheapest on ebay
[14:13:27] <OSR_Dragon> I could still go with the 120A10 and just use the 40v taps on my transformers
[14:13:51] <OSR_Dragon> They are measuring 44V open circuit... just give up some speed
[14:21:32] <OSR_Dragon> when you consider that you don't need the extra analog interface board, the 7i29's are about equivelent to $125 per axis
[14:21:36] <MacGalempsy> jymmm time ti
[14:21:45] <MacGalempsy> to install a drain?
[14:24:42] <Wolf_> OSR_Dragon: true, except that I got my BE25A20 for $98+$18s/h (for 2) and $75
[14:25:35] <OSR_Dragon> Wolf_: yeah, that is the kind of deal I am searching for ;)
[14:26:15] <Wolf_> last month the same seller had 3x for $130
[14:27:15] <OSR_Dragon> I do see a couple of b20a20 for $35... problem is, I need 6 total, but I guess you start somewhere
[14:28:42] <Jymmm> MacGalempsy: ?
[14:29:03] <OSR_Dragon> A friend has a pico board and 3 drives that he would sell me for a good price, but I am being a cheapskate
[14:29:04] <MacGalempsy> in the garage so it wont flood again
[14:29:36] <MacGalempsy> did anything get ruined?
[14:31:17] <Jymmm> MacGalempsy: Havne't looked (trying not to so I dont get more pissed), most things are off the ground
[14:31:30] <skunkworks_> OSR_Dragon, !
[14:32:48] <MacGalempsy> dang
[14:33:51] <skunkworks_> yah - we just keep an eye on ebay for a good deal... sometimes it takes a while..
[14:35:06] <OSR_Dragon> I will likely get the pico from him for the lathe in the end... he has a second one but I need 5 encoder counters for the mill and a bunch more i/o and he only has 3 pico drives anyway
[14:36:02] <OSR_Dragon> Jymmm: hope it's not too bad
[14:36:35] <skunkworks_> OSR_Dragon, Skunkworks = sam...
[14:36:52] <OSR_Dragon> skunkworks_: oh, hey!
[14:38:09] <OSR_Dragon> skunkworks_: how're things up north?
[14:38:20] <skunkworks_> rainy and foggy... :)
[14:38:30] <Wolf_> so far my deal of the year is a toss up between a tool post grinder (which I need to get a bigger lathe to use) and a set of kennedy boxes…
[14:39:36] <OSR_Dragon> I've actually been getting pretty good deals on the project so far, including the machines themselves
[14:39:44] <OSR_Dragon> I really can't complain
[14:40:06] <Wolf_> http://i.imgur.com/WzFfTBL.jpg $450
[14:40:52] <Wolf_> plus $50 for a new elo 15” kiosk type touch screen
[14:40:54] <OSR_Dragon> skunkworks_: I got the A-axis on Ed's second wells following a spindle encoder for hobbing
[14:41:43] <OSR_Dragon> I need to get the PID loop back in the equation though as the drive faults with no gain
[14:42:17] <skunkworks_> OSR_Dragon, awesome! did you use some of the config that andy did?
[14:42:55] <OSR_Dragon> yep, but he was using steppers so that is why I need to figure out all of the HAL plumbing to get the PID loop hooked back in
[14:43:27] <OSR_Dragon> once that is done he is going to order some Mesa stuff and set it all up on that 1918 horizontal mill he has in the back
[14:44:43] <Wolf_> oo, ^ that sounds relevant to my interests
[14:45:03] <OSR_Dragon> CNC hobbing on a 100 year old machine = COOL... I must be a geek
[14:45:14] <Wolf_> what type of wells machine?
[14:45:37] <OSR_Dragon> he has 2 wells index CNC knee mills
[14:46:04] <OSR_Dragon> the first is running servos in open loop with gecko drives... been making parts for 14 years that way
[14:46:17] <Wolf_> well yeah, I’m working on getting a index 645
[14:47:01] <Wolf_> thinking about converting it to cnc
[14:47:05] <OSR_Dragon> the second one I just got a mesa system running on the second one. As soon as we figure out a spindle encoder, the sandwich assembly will go back on it can start making parts
[14:47:28] <OSR_Dragon> I don't remember what model these are...
[14:47:41] <Wolf_> somehow I can’t see trying to convert the K&T #2 lol
[14:48:14] <OSR_Dragon> hey, I'm doing a 1980 Jet JVM-626 :P
[14:48:44] <OSR_Dragon> and the '79 Jet 1024p lathe that came with it
[14:49:18] <Wolf_> that looks somewhat normal
[14:50:51] <OSR_Dragon> that K&T still isn't as strange as that old horizontal that we are setting up for hobbing
[14:50:57] <Wolf_> http://www.practicalmachinist.com/vb/attachments/f12/32485d1300203254-sale-milwaukee-k-t-model-h-universal-w-accessories-milw-mill.jpg
[14:51:06] <Wolf_> #2 is a horizontal
[14:51:32] <Wolf_> grabbed the first pic I could find on google
[14:51:45] <OSR_Dragon> yeah
[14:52:32] <Wolf_> power feed on all 3 axis, not sure how the hell to cnc it lol
[14:53:31] <OSR_Dragon> yeah, that old one has a mechanical power feed on the X, complete with open gear train to stick your fingers into
[14:54:05] <OSR_Dragon> going to take that off and put a ballscrew on X and drive it with a servo
[14:55:05] <Wolf_> yeah, I’m not about to try to do that with the #2
[14:55:21] <Wolf_> 645 knee mill makes more sense to cnc
[14:56:12] * JT-Shop2 has grounded the building :) very little wiring left to do
[14:56:15] <Wolf_> mostly because it only has power on the X, and who wants to crank handles
[14:56:18] <OSR_Dragon> he also has an old hydraulic shaper that he put a CNC rotary axis on years ago... I couldn't even guess how many parts have come off of that machine
[14:56:35] <Wolf_> haha cool
[14:57:45] <OSR_Dragon> https://www.youtube.com/watch?v=4meWNvfgbsE
[14:58:09] <skunkworks_> this is amazing.. http://electronicsam.com/images/KandT/testing/emco/emcofollowng.png
[14:58:20] <skunkworks_> without trying too hard.. peak error of .0002"
[14:59:15] <skunkworks_> OSR_Dragon, do live in the sparta area?
[14:59:33] <Wolf_> ok, thats a hell of a idea, shaper with cnc rotary, easy splining
[15:00:24] <OSR_Dragon> laugh all you want but like I said, it just sits there and makes parts... still running EMC, if it ain't broke, don't fix it
[15:00:52] <OSR_Dragon> skunkworks_: right across river from lansing
[15:01:11] <skunkworks_> oh - wow - farther than I though
[15:01:12] <skunkworks_> thought
[15:17:26] <OSR_Dragon> skunkworks_: you don't have any ballscrews laying around that you don't need?
[15:22:31] <skunkworks_> heh - no.. sorry
[15:32:39] <skunkworks_> http://electronicsam.com/images/KandT/testing/emco/emcofollowng2.png
[15:33:31] <skunkworks_> https://www.youtube.com/watch?v=lTNzBLNBNiE
[15:45:12] <OSR_Dragon> skunkworks_: I should come visit again... been a couple of years
[16:27:10] <Deejay> gn8
[16:32:54] <andypugh> I feel a wierd sense of guilt that I didn’t manage to drag myself out to the workshop all day.
[16:34:00] <andypugh> (My reluctance is due to it being slightly below freezing in there, and machine tools not being much fun to handle)
[16:34:14] <JT-Shop2> I've been in my workshop wiring all day
[16:34:27] <JT-Shop2> no heat?
[16:35:33] <andypugh> I have a fan heater, but it doesn’t make much difference in what is basically a garage with an up-and-over door and with a tiled roof.
[16:36:33] <JT-Shop2> I had a hard time heating my garage till I put good door seals on the garage doors
[16:37:28] * JT-Shop2 emails andypugh a plasma cutter so he will write a better thc comp :)
[16:38:22] <andypugh> I did finally get the differential gear togehther yesterday, though: https://goo.gl/photos/W14hL4tPfkm5PQ1g9
[16:38:54] <JT-Shop2> nice
[16:39:23] <andypugh> JT-Shop2: What might be better is a _simpler_ thc comp that only knows how to enable and disable a pid component at the right times.
[16:40:26] <JT-Shop2> hmm, how would you bypass the position feedback?
[16:44:23] <andypugh> In an ideal world every jopint would have an external offset input pin.
[16:44:48] <andypugh> I occasionally look at where that should go, then get confused and give up :-)
[16:44:50] <JT-Shop2> yea that would be nice for a lot of things
[16:45:00] <Roguish> JT-Shop2: how about just altering the PID parameters temporarily? P,I,D, ferror, etc....... to essentially shut it down.
[16:46:10] <JT-Shop2> right now the thc comp doesn't use a pid except the one I use
[16:47:07] <JT-Shop2> basically I take the voltage offset and hyjack the Z stepper to keep it in the right range
[16:52:52] <pcw_home> andypugh: yeah a upstream offset input that obeyed accel/velocity constraints would be very useful
[16:54:24] <andypugh> I have looked, but not figured out where to insert it.
[16:54:48] <JT-Shop2> Roguish: pcw_home has recommended using a pid with the thc and I've done that on my machine but feel that the comp could be better...
[16:55:15] <JT-Shop2> I wonder if dgarr would know where to put an axis offset
[16:55:21] <FinboySlick> What's the differential for, andy?
[16:55:50] <andypugh> FinboySlick: A silly clock.
[16:56:11] <FinboySlick> Did you cut the gears too?
[16:56:16] <andypugh> It’s a 4-way diff.
[16:56:39] <andypugh> Yes, it was a fondness for cutting gears that got me started on the design,
[16:58:49] <FinboySlick> It doesn't have the clickspring mirror finish yet but it certainly makes up for it in complexity.
[16:59:51] <andypugh> I might just mail it to Clickspring on the basis that he would beunable to resist poilshing it
[17:01:25] <pfred1> andypugh you don't have a parts polisher?
[17:02:21] <andypugh> No, the butler is kept too busy with the cutlery.
[17:02:41] <pfred1> no one of the shakey bins with cones in it
[17:02:49] <FinboySlick> pfred1: In the way that Lewis Black has a ball washer? https://www.youtube.com/watch?v=5T8Gxk7vbec
[17:04:15] <pfred1> this one is very yellow https://www.youtube.com/watch?v=odhjG66CCWg
[17:06:18] <pfred1> these people take their polishing very seriously
[17:07:20] <Frank_6> wonder what happens if you stick your hand in there
[17:07:33] <pfred1> Frank_6 it comes out shiny
[17:08:00] <pfred1> that is a beautiful setup
[17:08:38] <pfred1> clickspring's mind would explode if you took him into that room
[17:08:50] <Frank_6> the "fingerprint remover"
[17:09:14] <FinboySlick> I'm rather surprised he doesn't have/show a tumbler/polisher yet.
[17:10:07] <andypugh> They wouldn’t work for his requirements. The important part with clock and watch polishing is keeping flat surfaces and sharp edges
[17:12:24] <FinboySlick> Oh speaking of flat. I was toying with the idea of fixing old hard drive platters onto relatively flat plates with a layer of epoxy to make up for gaps and have ultra-flat (if small and somewhat fragile) reference surfaces. Anyone with thoughts on that?
[17:13:35] <pfred1> FinboySlick you should have seen the platters we pulled out of an ancient minicomputer HDDs
[17:13:37] <SpeedEvil> they are probably only going to be locally flat if you do that
[17:13:42] <pfred1> they were oover a foot in diameter
[17:13:59] <archivist> andypugh, learn the cheats and get some 3M polishing papers and a burnisher
[17:14:20] <FinboySlick> SpeedEvil: Well, the idea with the epoxy is that they'd be able to keep their 'natural' flatness if there's no stress in the gluing process.
[17:14:31] <SpeedEvil> FinboySlick: epoxy moves a bit as it sets
[17:15:18] <FinboySlick> SpeedEvil: That's one of the things I considered as a drawback. I imagine one would have to worry about either shrink or growth.
[17:15:23] <Nick-Shop> JT-around?
[17:15:35] <pfred1> you want JB weld-it
[17:15:55] <SpeedEvil> small surface plates are remarkably inexpensive
[17:16:17] <pfred1> SpeedEvil its the shipping that kills ya
[17:16:31] <MacGalempsy_> andypugh: have you heard if anyone has been able to do a HAL simulation on a Fusion360 model?
[17:16:52] <FinboySlick> Prime apparently ships up to 9x12 for free ;)
[17:17:11] <andypugh> MacGalempsy_: I am afraid I don’t understand the question.
[17:18:02] <FinboySlick> pfred1: Would JB weld have less shrink than normal epoxy?
[17:18:11] <MacGalempsy_> well, in Fusion, one can make joints then simulate movement, but iwas wondering about simulating HAL pins to the model and control the model with CNC
[17:18:19] <pfred1> FinboySlick I doubt it
[17:18:43] <MacGalempsy_> I guess as in a prefabrication run for programming the machine
[17:18:43] <SpeedEvil> http://www.ebay.co.uk/itm/Granite-Surface-Plate-12-x-9-x-3-Grade-AA-/292007085043?hash=item43fcfa83f3:g:~JkAAOSwNSxVFR5L
[17:18:59] <archivist> MacGalempsy, look at vismach in linuxcnc it is built in
[17:19:24] <SpeedEvil> Local surface plates which don't ship can be lots cheaper
[17:19:25] <andypugh> MacGalempsy_: If you can export the model as an STL file then Vismach can do the rest: http://linuxcnc.org/docs/2.7/html/gui/vismach.html
[17:19:47] <MacGalempsy_> ah, ok. that will do.
[17:20:01] <MacGalempsy_> thanks
[17:21:11] <FinboySlick> pfred1: That was one of the things I was actually curious about. What sort of process would both compensate for lack of flatness on the base and minimize warp.
[17:21:32] <SpeedEvil> using a non-setting fixative
[17:21:38] <SpeedEvil> pitch, for example
[17:22:21] <archivist> for added interest google "pitch drop experiment"
[17:30:22] <FinboySlick> Interesting... I'll look that up.
[17:32:21] <JT-Shop2> hmm cold front coming Thursday... I wonder if I'll be done putting the itch up on the roof
[17:32:28] <FinboySlick> It's stating the obvious but I have to say, the collective intellect and experience of this channel is mind-boggling. It might just be me living in an intellectual wasteland but I genuinely feel privileged to share with you guys.
[17:33:36] <Tom_itx> andypugh, what did you wind up doing to hold your gears?
[17:37:45] <Nick-Shop> JT-Shop-2- hardinge turret - how do I put a second tool offset on the same tool position?
[17:37:45] <andypugh> The ones inside the diff are held on with Loctite. But I think I have a mechanical solution for the others.
[17:38:27] <JT-Shop2> Nick-Shop: sorry I don't understand the question
[17:39:22] <andypugh> Tom_itx: https://www.youtube.com/watch?v=s0yC4TcMmZA
[17:39:48] <sync_> FinboySlick: you can use glues that stay flexible
[17:39:57] <sync_> but then your platters are not stiff anymore
[17:40:15] <sync_> in the end, the answer is, get a surface plate
[17:40:28] <andypugh> Nick-Shop: Currently you can’t. The answer is to set up the tool-changer so that tools 1 and 21 are the same physical carousel position, and use 21 as the pocket for the second offset.
[17:41:09] <Nick-Shop> I have a drill ias t1 h1 and need to add a second dill on the same tool slot and call it as a different offset
[17:41:33] <Nick-Shop> I did t1 h21 and it complains
[17:41:54] <andypugh> You would need to have an entry in the tool table for 21 to hold the second offset.
[17:42:31] <Tom_itx> andypugh so the gear edge is bevelled a bit
[17:42:42] <andypugh> (and if you set up the toolchanger logic, that could be T21
[17:43:08] <andypugh> Tom_itx: 6 degree taper on both the inner and outer bores.
[17:43:13] <Tom_itx> right
[17:43:16] <Nick-Shop> the turret keeps indexing not able to find t21
[17:43:28] <Tom_itx> good idea
[17:43:41] <Tom_itx> unless you have several stacked and need to move the inner one
[17:43:42] <Nick-Shop> and it wont take t1 h21
[17:43:43] <andypugh> Nick-Shop: Well, yes, you need to set up the tool changer logic to use modulo maths
[17:44:27] <sync_> is that for your clock andypugh?
[17:44:34] <andypugh> Yes
[17:44:49] <andypugh> Those are M2.5 swcrews.
[17:44:59] <Nick-Shop> is there a way to work it out in the plc that controls it now?
[17:45:13] <andypugh> I have no idea.
[17:45:52] <sync_> neat
[17:46:54] <JT-Shop2> Nick-Shop: I'm sure there is a way to do modulo math
[17:48:07] <sync_> I need to get a M2.5 machine tap, got something using them in the works
[17:48:56] <JT-Shop2> OSG works
[17:51:10] <andypugh> Reading the Daniels watchmaking book, he uses metric screws everywhere, and not as small as you might imagine.
[17:51:20] <sync_> I'll get garant, probably
[17:52:10] <archivist> andypugh, I actually shook his hand a long time ago
[17:52:27] <andypugh> Yes, you wouldn’t want to do that now.
[17:52:37] <archivist> I know
[17:53:02] <archivist> BHI certificate thing we attended
[17:54:16] <archivist> BHI made a milenium clock which was presented to hmq
[17:54:30] <andypugh> What I like about his story is that he only made 37 watches in his career, but still managed to buy an £8 million car collections, so seems to have made good money from it.
[17:55:39] <archivist> I have no idea how he charged http://www.collection.archivist.info/searchv13.php?searchstr=millenium+clock
[17:56:11] <andypugh> I guess he paid less for this in 1970 when he bought it than it sold for after his death: https://en.wikipedia.org/wiki/Bentley_Blower_No.1
[17:56:22] <archivist> he is far right http://www.collection.archivist.info/archive/DJCPD/PD/2002/2002_10_14_BHI_Millenium_Clock/PA130410.JPG
[17:57:18] <andypugh> That all looks marvellously amateur :-)
[17:58:16] <archivist> we didnt know in advance about the certificates, oops
[17:58:54] <archivist> I did the winding gears a worm and helical
[17:59:14] <sync_> oh wow, that thing is horribly inefficient :D
[17:59:45] <archivist> it winds the clock up from a solar cell
[18:00:02] <archivist> not a lot of efficiency needed
[18:00:31] <andypugh> Maybe you can help me: I have a spring in front of me. Direct from the clock spares shop. OD at the moment wrapped in wire is 55mm. ID 14mm. What would you expect the barrel and shaft diamters to be?
[18:00:53] <archivist> other gears I made for it had to be remade our gear cutting up to that point was not good
[18:01:54] <archivist> that is about the right diameter to go straight into the barrel, it will be a fight, expect cuts
[18:02:30] <andypugh> How do I get the spring past the barrel hook if they are the same diameter?
[18:02:42] <archivist> that is the fight part
[18:03:01] <archivist> unroll and feed on
[18:03:04] <MacGalempsy_> isnt the Bentley Blower what 007 drove in the book Casino Royale?
[18:03:08] <archivist> on/in
[18:03:17] <andypugh> It’s a bit of a beast of a spring. 45mm wide and 0.5mm thick.
[18:04:01] <archivist> I know how hard springs are to insert, the magic tools for the job are not much good
[18:04:42] <andypugh> I might try to come up with a way to insert the barrel hook after the fact.
[18:06:20] <andypugh> (I am willfully ignoring all accepted horological practice throughout this project, including using involute gears everywhere)
[18:07:14] <archivist> http://www.clockworks.com/pics/pics-clock-tools/Winder.jpg
[18:07:35] <archivist> nothing wrong with involute
[18:08:26] <archivist> wrap the barrel and spring in a cloth to catch it when it escapes
[18:09:27] <archivist> ladies wrist watch mainspring is a right bugger because so small compared to thumbs and fingers
[18:10:17] <andypugh> But the danger is small.
[18:10:20] <archivist> you better have the hook right in the barrel too so it catches
[18:10:54] <archivist> it flies just as far and finding the barrel is hard
[18:10:59] <andypugh> This spring on my desk right now looks like a sword-bomb primed to go off :-)
[18:11:37] <archivist> I have had one explode and crack a barrel open
[18:11:56] <archivist> the inner hook must not let go
[18:12:14] <andypugh> Maybe I should contact Lee Steel Strip to see if they have any of the steel I developed. It would be nice to use my own spring steel in my owb clock.
[18:13:02] <andypugh> I was going to skeletonise the barrel. Perhaps I won’t now.
[18:13:31] <archivist> note the one you have bought should have polished edges for long life
[18:13:54] <andypugh> (Though, it is currently retained by a bit of wire, so can’t be _that_ hard to contain)
[18:14:03] <andypugh> It does seem to have.
[18:14:46] <archivist> we used to hand insert so wrap and undo the wire
[18:14:48] <andypugh> I am at the point where I need to make some major assemblies and see what torque they need, then see what torque the spring makes, and go from there.
[18:15:40] <archivist> sometimes if the barrel was large enough I could insert with the wire on
[18:16:07] <sync_> does it do something special (well, since it was developed for something it probably does) archivist
[18:16:10] <sync_> eh andypugh
[18:18:50] <andypugh> archivist: This spring is similar in size to a hand, I don’t facny hand-feeding it: https://goo.gl/photos/prvhyDCaLGKhqpzv7
[18:19:16] <andypugh> Naturally I used a hand-model with freaky fingernails.
[18:19:27] <archivist> I cannot see any google images
[18:19:57] <archivist> even a later firefox cannot see
[18:20:03] <andypugh> I wonder why?
[18:20:08] <sync_> haha, those nails
[18:20:31] <archivist> look at the stupid JS source of their pages
[18:20:35] <MacGalempsy_> cut all than the pinkie
[18:21:01] <sync_> works for me archivist
[18:21:41] <archivist> not on the firefox on ubuntu 8 or 10
[18:22:51] <archivist> and google tracking is getting obtrusive, my ebay purchases appear in google searches
[18:22:54] <XXCoder> I see one image, of what it appears to be big wind up spring
[18:23:01] <XXCoder> xfce mint, firefox
[18:23:14] <MacGalempsy_> yeah, I have had that happen, and on websites that have google embedded ads
[18:23:28] <MacGalempsy_> only thing so far that has stopped that is TOR
[18:23:33] <XXCoder> andypugh: should there be more pictures?
[18:23:59] <andypugh> XXCoder: Not many more
[18:24:17] <XXCoder> odd only one image there
[18:24:34] <XXCoder> checked, nothing disabled
[18:24:39] <andypugh> This is the albumen link. https://goo.gl/photos/Ys8A7zf8eztTCJ897
[18:25:38] <XXCoder> site seem to work fine
[18:27:42] <andypugh> XXCoder: I think the issue here is the difference between “works” and “is written in a sane way for what is really quite a simple application”
[18:27:50] <archivist> I just get a blank content http://www.collection.archivist.info/archive/grabs/Screenshot-45.png
[18:27:52] <XXCoder> ahh ok
[18:28:10] <sync_> ubuntu 10, what's the latest firefox they ship there
[18:28:27] <XXCoder> mine is 50.1
[18:28:41] <archivist> about 20 something
[18:28:52] <pfred1> I stopped updating firefaux
[18:29:34] <sync_> yeah that is ages old, I'd update to something newer
[18:29:55] <archivist> that particular box in past updating
[18:30:28] <pfred1> archivist that's where I'm at with this PC now i have to build new apps from source on it
[18:31:01] <archivist> then you find sources wont build due to some other thing
[18:31:04] <pfred1> I tried to build Blender the othr day what a mess their build is
[18:31:24] <pfred1> archivist well yeah you do have to upgrade deps
[18:31:28] <archivist> its the "new shiny" problem
[18:31:56] <pfred1> the trick is not to let those upgraded deps screw with the existing system
[18:32:10] <archivist> so I leave well alone
[18:32:16] <pfred1> meh not me
[18:32:51] <pfred1> there's always some incantation that works
[18:33:35] <sync_> not really archivist, it's just not worth staying with old software
[18:33:46] <pfred1> sync_ sure it is
[18:34:05] <sync_> nah, progress!
[18:34:07] <archivist> other box has working cnc
[18:34:21] <pfred1> yeah there's a lot to be said for works
[18:34:27] <archivist> fsck breaking it
[18:34:45] <pfred1> this is my experimental system
[18:34:50] <archivist> it is plain rude for sites to not work
[18:35:06] <andypugh> I play with old trucks and old cars. I am not a great fan of progress for the sake of progress.
[18:35:07] <sync_> it is just plain rude to expect people to support legacy
[18:35:18] <pfred1> andypugh yeah me either
[18:35:33] <pfred1> change for the sake of change
[18:35:41] <archivist> the new shiny
[18:35:52] <pfred1> often it is the new crappy
[18:35:55] <andypugh> LinuxCNC tried hard not to break existing systems, and we do it for free. Google have no excuse,
[18:36:05] <archivist> make them upgrade memory and machines to rou our shit
[18:36:14] <pfred1> user inertia is real
[18:36:49] <pfred1> once stuff works i tend to want to stick with it myself
[18:39:11] <sync_> it's also wise to be up to date from a security viewpoint, why should I use software with known bugs (sure, new software has new bugs but that is part of the game)
[18:39:48] <sync_> if I ran a company and lost my customers data, it'd be pretty dumb if I said, but it worked so well
[18:39:54] <pfred1> sync_ nobody is hacking me that I know about
[18:40:33] <andypugh> Somebody hacked my Mill a couple of weeks back, that was a bit scary.
[18:40:43] <sync_> if you don't care, fine
[18:41:01] <andypugh> Suddenly someone was remote-desktopping a running CNC machine.
[18:41:19] <andypugh> (I pulled the cable, and turned of RD)
[18:41:48] <pfred1> did you enable Remote Desktop?
[18:42:26] <andypugh> I had done so a long time ago, and because I couldn’t get the Mac to connect, it was set to zero security.
[18:42:30] <andypugh> And then I forgot.
[18:42:33] <pfred1> I definitely IRC cloaked
[18:42:54] <pfred1> I'd recommend that to anyone here too
[18:43:10] <andypugh> Still not sure how the connection was made, possibly WiFi. But I have now closed off all external ports on my router.
[18:43:29] <pfred1> heck I can't even get on my own wifi
[18:43:53] <pfred1> I had it working once but the ISP changed something and that was the end of that
[18:44:22] <pfred1> so I have CAT5 cable wherever
[18:44:42] <malcom2073> Security is a funny thing
[18:45:48] <pfred1> there's probably not a lot of people war driving around here either
[18:46:14] <pfred1> if they parked on my street they'd stand out like a sore thumb
[18:46:45] <pfred1> they'd probably get shot
[18:47:08] <sync_> I'd be more worried about somebody getting out of my browsers sandbox
[18:48:45] <malcom2073> If someone parked within range of my wifi, they'd either be my neighbors, or be on my property
[18:48:54] <malcom2073> Either way, I could shoot 'em
[18:49:13] <malcom2073> be on my neighbors*
[18:50:40] <pfred1> yeah I don't know what my wifi range is
[18:50:53] <pfred1> I'm a little more than 300 feet from the road
[18:51:54] <pfred1> I noticed it falling off even if i used it in my garage though
[18:52:36] <pfred1> I know a cordless phone won't go halfway up the driveway
[18:55:31] <malcom2073> Need to figure out a good way to fixture this, so next time it doesn't take so much time to swap parts between runs: https://scontent.fphl2-1.fna.fbcdn.net/v/t31.0-8/16251633_1520680844612958_6428905191066358329_o.jpg?oh=d11db7fbb335136a64757b2490acfcc3&oe=591532F1
[18:57:50] <pfred1> my low profile nose down holding clamps would probably hold that
[19:03:38] <malcom2073> Yeah, but the headache of lineing up a bunch of them on the table with hold down clamps might not be worth it, unsure
[19:03:59] <pfred1> I used to make these http://i.imgur.com/Z5pXaMO.jpg
[19:05:32] <pfred1> but I didn't make that pair
[19:05:54] <malcom2073> I wonder if I could use something like that to make a fixture plate
[19:06:02] <pfred1> I bought them off this old guy that was an artist for bell Labs
[19:06:03] <malcom2073> Have clamps set up to hold down like 6 of these
[19:06:32] <malcom2073> Of course, the other issue is: They stand on their side to be cut
[19:06:33] <malcom2073> Not flat
[19:06:47] <pfred1> they're a neat design as you crank on them the nose goes in, and down
[19:06:56] <pfred1> oh
[19:07:05] <pfred1> then these wouldn't work at all
[19:07:24] <pfred1> unless you had like a 90 degree angle plate or something
[19:07:56] <pfred1> Boeing liked our clamps for their wing fixture jigs
[19:08:03] <pfred1> they were our best customer
[19:08:26] <pfred1> until they finally figured out that they could take the clamps off their old fixtures and reuse them
[19:08:37] <malcom2073> Haha
[19:08:41] <malcom2073> Yeah
[19:08:46] <pfred1> that took them decades to figure out
[19:09:06] <malcom2073> Good run then while it lasted
[19:09:25] <pfred1> yeah they probably got more clamps now than they know what to do with
[19:11:01] <pfred1> we used our clamps in our shop a lot
[19:17:12] <XXCoder> heh kinda like company I work for and techi-grips
[19:17:22] <XXCoder> so many trchi-grips used at work.
[19:17:44] <andypugh> malcom2073: Ice chuck?
[19:18:59] <malcom2073> andypugh: not sure that would work well
[19:19:22] <andypugh> It might if the parts could fit in a pocket.
[19:20:14] <andypugh> I used a pocket + hot melt glue for a tricky job I had. ice is just a faster and cleaner alternative.
[19:20:16] <malcom2073> They're 50x165
[19:20:37] <andypugh> Is that inches or mm?
[19:20:53] <malcom2073> I converted to mm for ya
[19:20:56] <malcom2073> it's 2" by 6.5"
[19:21:04] <malcom2073> inches, really?
[19:21:08] <malcom2073> Look at the picture :-P
[19:21:29] <andypugh> A pocket and ice seems like a good way, then.
[19:21:53] <malcom2073> I don't have a freezer that big
[19:21:56] <andypugh> Or, a pocket and slightly-diagonal screws if yiou can accept some marring of edges
[19:22:01] <malcom2073> But if I had a huge chest freezer, yeah I could do that
[19:22:24] <andypugh> malcom2073: Ah, you can buy freezing plates to mount on the mill
[19:22:30] <malcom2073> Heh
[19:22:32] <malcom2073> "buy" :-P
[19:22:33] <malcom2073> I'm cheap
[19:22:41] <andypugh> http://www.leaderchuck.com/index.asp?id=433
[19:23:17] <andypugh> Ah, OK, I thought this was a commercial question.
[19:23:35] <malcom2073> Ah heh no, this is a me being lazy and cheap question :)
[19:23:48] <malcom2073> That's cool
[19:23:51] <andypugh> In which case you could use the pocket + hot melt + domestic oven approach.
[19:23:51] <malcom2073> literally
[19:25:33] <XXCoder> using ice as clamp
[19:26:09] <malcom2073> apparently stronger than a magnet
[19:26:19] <XXCoder> interesting
[19:27:23] <andypugh> malcom2073: I made the parts in picture 6 here: http://bodgesoc.blogspot.co.uk/search/label/Neracar01%20The%20Beginning By machining the back face then setting them in a block with pockets in the kitchen oven with hot-melt glue. The block had a reference-hole for probing and was held down with normal clamps. http://bodgesoc.blogspot.co.uk/search/label/Neracar01%20The%20Beginning
[19:28:37] <malcom2073> Nice, so did you clamp the part against two sides of the pocket to ensure it's located accurately before glueing?
[19:29:03] <andypugh> It was just made as a fairly tight fit.
[19:32:54] <andypugh> Right, time to sleep, work tomorrow.
[20:38:56] <BeachBumPete> Jeez man where did this weekend go?
[20:41:51] <Wolf_> no idea, blame trump
[20:49:45] <Gene_home> i'm surprised we are all alive...
[20:50:18] <MacGalempsy> we barely survived
[20:50:53] <Gene_home> one good thing for sure is SNL is much better now days
[20:51:41] <MacGalempsy> not really. its been pretty lame
[20:52:07] <Gene_home> http://hollywoodlife.com/2016/10/15/donald-trump-attacks-hillary-clinton-snl-saturday-night-live-video-watch/
[20:52:23] <Wolf_> some stuff is a good change to see IMO https://www.whitehouse.gov/law-enforcement-community
[20:54:28] <MacGalempsy> i like the energy policy page
[20:55:26] <Wolf_> lol, you would
[20:56:29] <MacGalempsy> when 200 ppl apply for one job, we need it!
[20:56:50] <Wolf_> “We must take advantage of the estimated $50 trillion in untapped shale, oil, and natural gas reserves, especially those on federal lands that the American people own.” wow, I’m surprised that people arent shitting kittens on FB over that as well...
[20:58:06] <MacGalempsy> when 1 lost oilfield job leads to 4 other lost jobs, any increase is multiplied
[22:21:43] <MacGalempsy> Wolf_ have you tried grbl?
[22:21:49] <Wolf_> no
[22:22:52] <MacGalempsy> looks pretty complete for arduino firmware
[22:24:38] <Wolf_> neat, guess I should take a peek at it
[22:26:35] <Wolf_> sorta liking the idea of stupid over kill mini plasma rig (nema 34 servos/mesa on a 2’x4’ portable) or just use some of the nema 23 steppers I have (still overkill)
[22:39:23] <MacGalempsy> yeah. the mega 2560 is so cheap
[22:40:07] <MacGalempsy> getting the torch height under control may be difficult, but they have a pretty active programming team
[22:40:45] <MacGalempsy> i like the omax micro waterjet
[22:42:17] <Wolf_> eh, what, omax micro?
[22:42:55] <Wolf_> I like omax stuff, I check out one of their machines years ago
[22:44:22] <MacGalempsy> its a portable waterjet
[22:44:57] <MacGalempsy> microMAX
[22:46:05] <Wolf_> lol, their idea of portable means you can move it with a large truck
[22:46:21] <MacGalempsy> they seem to have cabinets now but a few years ago it looked like a birthing pool
[22:46:28] <MacGalempsy> with a gantry
[22:46:39] <Wolf_> 3800lbs (dry weight)
[22:46:49] <Wolf_> lol
[22:47:30] <XXCoder> what the fuck
[22:47:34] <Wolf_> yeah, I think that most of the machines were 4’ min on one axis
[22:47:38] <XXCoder> youtube changed how it workjs
[22:47:44] <XXCoder> im now uncertain how to upload a videp
[22:49:05] <MacGalempsy> damn. it reminds me of when office 2010 debuted
[22:49:26] <MacGalempsy> nobpdy knew what to do about the dang ribbobs
[22:49:35] <MacGalempsy> *ribbons
[22:49:35] <XXCoder> found it
[22:49:48] <XXCoder> its my fault, I altered youtube colors and icon happen to be same color
[22:53:03] <MacGalempsy> waterjet is only 36000psi
[22:53:15] <MacGalempsy> heh
[22:53:21] <Wolf_> only
[22:53:22] <MacGalempsy> 2500bR
[22:53:24] <MacGalempsy> bar
[22:53:55] <Wolf_> I have a flow int shirt somewhere from my first construction job after high school
[22:54:24] <Wolf_> 35,000psi does neat things to concrete
[22:54:58] <MacGalempsy> just keep necking it down
[22:55:29] <MacGalempsy> get enough head and do it under gravity
[22:55:34] <Wolf_> they where using 3mm tip, and 2 x pumps in series
[22:56:12] <MacGalempsy> there was that waterjet in tx for 6500
[22:56:15] <Wolf_> pumps were about 15’x20’ things
[22:56:36] <MacGalempsy> they cut granite countertop
[22:56:51] <Wolf_> this was just water, no garnet
[22:57:10] <Wolf_> taking out 12” of concrete and left the rebar and conduits
[22:57:44] <MacGalempsy> cool
[22:58:06] <Wolf_> very very loud
[22:58:21] <MacGalempsy> y garnet?
[22:58:38] <MacGalempsy> not sand?
[22:58:44] <Wolf_> thats what they use in the water jets to cut everything
[22:58:54] <Wolf_> no idea
[22:59:26] <MacGalempsy> garnet is like an 8 and it cleaves not concoidal fractures
[22:59:40] <MacGalempsy> so stronger
[23:00:23] <Wolf_> guess thats the reason they can toss a chunk of alum or stainless in the same machine
[23:00:28] <MacGalempsy> sand is 7 and shatters. but cheaper
[23:00:55] <Wolf_> might be cost + how clean the bag of stuff is
[23:01:02] <MacGalempsy> did u see the res on the micromax?
[23:01:47] <MacGalempsy> its actually amazing how clean sand can be from the right part of the channel
[23:01:52] <Wolf_> didn’t look, but I went to a demo of the Omax machine like 10 yrs ago
[23:02:05] <Wolf_> kerf was tiny
[23:02:17] <MacGalempsy> yeah.
[23:03:10] <Wolf_> was impressive, not $80k impressive lol
[23:03:36] <MacGalempsy> http://www.sme.org/uploadedImages/Publications/ME_Magazine/2015/Yearbooks/Medical/Omax%20biomed%20components.jpg
[23:04:11] <Gene_home> nice!
[23:04:24] <Wolf_> yeah, they were passing that kinda stuff around at the demo (open house)
[23:05:36] <Wolf_> messed up part is out of 10 or so people only 2 did metal work lol
[23:07:12] <MacGalempsy> lol. the other 8 were suits and bean counters?
[23:07:25] <Wolf_> counter top companies
[23:08:33] <XXCoder> hard men
[23:09:03] <Wolf_> other metal guy was from a scrap dealer, they were looking at something to speed up cutting thick stock, they brought in a 10” slab of alum to test cut
[23:10:42] <MacGalempsy> how did it do?
[23:10:54] <Wolf_> like butter
[23:11:09] <MacGalempsy> cool
[23:11:25] <Wolf_> some draft in the cut but this was when 5 axis just came out
[23:12:43] <MacGalempsy> 5 axis waterjet. wow
[23:12:57] <Wolf_> yeah, 2 axis on the nozzle
[23:13:29] <Wolf_> so it adjusts the stream to null the cut draft on the part
[23:14:28] <yasnak> mmeeeeeh
[23:16:09] <MacGalempsy> oh?
[23:42:13] <MacGalempsy> how does it know the draft angle?
[23:42:26] <Wolf_> magic
[23:42:29] <Wolf_> or maths
[23:44:13] <XXCoder> voodoo
[23:44:36] <Wolf_> https://www.youtube.com/watch?v=WTw-mPSej7k
[23:50:00] <MacGalempsy> v[
[23:50:35] <MacGalempsy> i was thinking the tubing would be wider
[23:51:03] <MacGalempsy> p1v1=p2v2
[23:52:58] <MacGalempsy> i forget how to take that to diameter
[23:53:15] <XXCoder> Wolf_: pretty amazing video
[23:53:46] <MacGalempsy> 2nd deviation?
[23:54:04] <Wolf_> idk
[23:54:31] <Wolf_> http://www.flowwaterjet.com/Cutting-Heads/Dynamic-Waterjet is what I had in mind
[23:54:31] <XXCoder> wow
[23:54:38] <XXCoder> stone cutting is so slow
[23:54:45] <Wolf_> 6” stone
[23:56:31] <Wolf_> needs to cut slow or you get stream lag
[23:56:48] <XXCoder> interrsting tht it unwinds so it dont snap water or abrustive tube
[23:56:56] <Wolf_> yeah lol
[23:57:11] <MacGalempsy> pretty critical
[23:57:40] <MacGalempsy> kink at 36000psi is like a bomb
[23:58:20] <Wolf_> bad day™