#linuxcnc Logs

Oct 18 2017

#linuxcnc Calendar

12:00 AM L29Ah: it's not like linuxcnc has lots of high priority rt threads to schedule around, is it?
12:08 AM Crom_: Not missing my appendix, the lappy appy still hurting though
12:08 AM Crom_: I'm wondering how long it's going to take me to save up for the CNC kit for my 44991 from CNCFusion
12:13 AM Crom_: Just ordered wedges to take off the R8 JT33 from my chuck, so I can put on the TTS-JT33 adapter on the drill chuck. I ordered an Arbor, slitting saw 1/32", and a 1/2" R8 collet to hold it (Wanted the extra height using a R8 instead of a TTS)\
01:08 AM IchGucksLive: morning from germany
01:11 AM IchGucksLive: lunadabay hi to california
01:11 AM lunadabay_ is now known as lunadabay
01:16 AM Crom_: Hiya IchGucksLive
01:17 AM Crom_: Been really busy, and last week I was in the hospital for appendicitis (They took it out Thursday morning)
01:17 AM IchGucksLive: all fine
01:18 AM IchGucksLive: yeah this wek is gone be a bussy one
01:18 AM Crom_: I just ordered a slitting saw, arbor, and a R8 collet to hold it. I have a project to make some Mini Minor axle pullers for my brother.
01:19 AM Crom_: I now need a steady rest for my lathe, or I need to rig something that will work.
01:20 AM Crom_: I can do everything except counter bore the 1.002" tube to 1.045" for 1.5"
01:21 AM Crom_: Hmm, I could cut off 2" of the tube, bore it, weld it back on the rest of the tube, then slit it.
01:24 AM IchGucksLive: sounds like a plan
01:24 AM Crom_: hmm... make a pilot and then mount a cutter so it sticks out 0.0225", then mount that on a MT2 shank to run in the tail stock.
01:27 AM Crom_: cut off 2" will be quicker
01:28 AM Crom_: And I have to build a heat treat over as well...
01:28 AM Crom_: oven
01:30 AM Crom_: 2 pieces need to be hardened. tip of the 1/2 tube, and the piece of 1/2" Cold rolled which goes over the dimple in the axle.
01:31 AM IchGucksLive: lots of work doesent somthing buyable fit your needs
01:32 AM Crom_: 12.9 10mm 80mm (3/8" NF 3.5" )long bolts for pushing the pieces apart.
01:34 AM Crom_: IchGucksLive: no one makes the factory tool anymore. I think I'm going to sell the 1st 6 or 12 for $250 each free shipping. then next set will be $225, then I should be able to get the price down to $150.
01:35 AM Crom_: The 50year old factory tools sell for $600 when they sell
01:35 AM Crom_: I think mine will be better than the factory tool.
01:41 AM Crom_: They'll pay for the CNC'ing of my mill, If I sell enough it'll get me a bigger mill and a new lathe
01:41 AM IchGucksLive: then its best to go for selfmade agree on that
01:43 AM Crom_: once I CNC my mill, I can go to the one bolt design, so it's almost a one handed operation.
01:45 AM Crom_: nite nite
01:51 AM CaptHindsight: Crom: do you have socialist health care?
02:18 AM IchGucksLive: later ;-(
02:23 AM archivist: Crom, which puller?
02:28 AM Deejay: moin
03:16 AM gloops: just been billed £20 for machining ends on 4 ballscrews
03:16 AM gloops: this sounds suspiciously cheap
03:17 AM MarcelineVQ: maybe they want you to come back
03:18 AM gloops: maybe..i suppose if a machine is set up just for the ends it isnt a long job
03:18 AM archivist: when you have lots to do, you have a simple setup lathe/collets etc
03:19 AM gloops: imagine theyll have a cnc just running the same cut over and over, just someone loading it, 5 minute job
03:59 AM diginet_ is now known as diginet
04:00 AM {HD}_ is now known as {HD}
05:17 AM jthornton: morning
05:23 AM selroc: hi
06:33 AM Tom_L: morning
06:33 AM * jthornton needs to figure out how to load the os on the sd card for the blueberry pie coming today
06:33 AM jthornton: morning Tom
06:34 AM Tom_L: wonder if rufus would do that
06:35 AM jthornton: https://www.raspberrypi.org/documentation/installation/installing-images/
06:35 AM jthornton: says to use etcher
06:36 AM Tom_L: they should know
06:36 AM Tom_L: rufus is for USB i think
06:39 AM jthornton: I think I'm going to send the $40 poe camera back the image keeps dropping out in zoneminder
06:42 AM jthornton: oh well so much for linux E: Unable to locate package etcher-electron
06:46 AM XXCoder: windows: cant do crap. linux: can do any crap, with 10 times more work
06:49 AM * jthornton has to add more roosting room today
07:01 AM MarkusBec: on linux you can simpy dd it onto the sd card
07:01 AM MarkusBec: https://www.raspberrypi.org/documentation/installation/installing-images/linux.md
07:02 AM MarkusBec: warning you can crash your system if you dd the image over your PCs harddisk
07:05 AM jthornton: lol yea
07:07 AM XXCoder: I remember one where guy dd'd image of disk into file in same disk
07:07 AM XXCoder: so disk was full at end heh
07:08 AM XXCoder: off to bed I go
07:09 AM jthornton: goodnight
07:41 AM jthornton: this is interesting http://abyz.co.uk/rpi/pigpio/examples.html#Python%20code
08:21 AM Tom_L: isn't the io on those 3.3v?
08:21 AM Tom_L: the pi that is
08:25 AM JT-Shop: I think is also has 5v but not sure at this point
10:19 AM gregcnc: portable pen plotter? https://vimeo.com/193294744
11:02 AM MrHindsight: gregcnc: looks like they invented the per plotter without an enclosure
11:02 AM MrHindsight: per/pen
11:05 AM gregcnc: other artbots https://shop.evilmadscientist.com/directory
11:06 AM MrHindsight: https://vimeo.com/53238885 this enclosure free one uses a gantry vs cantilever
11:07 AM MrHindsight: pen plotter sounds like something your grandpa had
11:08 AM MrHindsight: back when people used phones with cords to talk to one another
11:08 AM gregcnc: I may still have a pen plot print I did in HS in early 90's
11:12 AM gregcnc: An egg plotter might be fun for Easter
11:32 AM MrHindsight: Carving a Pumpkin in Under 30 Seconds With A Waterjet https://www.youtube.com/watch?v=j2KXrIaCfGk
11:47 AM ziper: is this actually a south bend https://miami.craigslist.org/mdc/tls/d/shop-closing-tools-for-sale/6347707205.html
11:49 AM MrHindsight: ziper: https://www.youtube.com/watch?v=nxzjtSN0xfQ
11:50 AM IchGucksLive: hi all from sunny germany
11:51 AM MrHindsight: https://youtu.be/AIcVBcWIyIg?t=57s
11:53 AM ziper: that one looks like it, thanks, i was looking up the 10 inch based on what it said in the description
11:58 AM kb8wmc: good day to all
11:58 AM IchGucksLive: ;-)
11:59 AM kb8wmc: IchGucksLive: good day to you: I have a question for you if you have time...
12:00 PM IchGucksLive: always a plesure to help you
12:36 PM IchGucksLive: hi gloops
12:38 PM gloops: hi Ichs
12:38 PM IchGucksLive: ;-)
12:53 PM JT-Shop: well crap seems like none of my monitors have a HDMI port... wonder how I can set up the pi now
12:53 PM IchGucksLive: use the NET
12:53 PM IchGucksLive: ETH
12:54 PM JT-Shop: it doesn't seem to show up... but that might be a bad port on the switch
12:54 PM IchGucksLive: JT-Shop: https://www.raspberrypi.org/documentation/remote-access/ssh/sftp.md
12:55 PM JT-Shop: thanks
12:55 PM IchGucksLive: ;-)
12:58 PM JT-Shop: hmm still not showing up in my router list :(
12:59 PM JT-Shop: hmm the led is orange on the switch while the rest of the ports connected to a pc show green
01:05 PM JT-Shop: ah I found a monitor in the beer cave :)
01:06 PM IchGucksLive: beer
01:06 PM the_wench: I am not your waitress!
01:06 PM IchGucksLive: ;-) :P :O
01:11 PM JT-Shop: well it boots up :)
01:23 PM IchGucksLive: Gn8
01:31 PM JT-Shop: alright the pie is up and going... play with it in the morning back to work
01:56 PM andypugh: I don’t get it
01:56 PM andypugh: http://www.ebay.co.uk/itm/Reverse-Spot-Face-Counterbore-Mandrel-2-MT-4-A-BD-/151792231872?var=&hash=item235785a5c0:g:qzIAAOSwMmBV3Hh3
01:56 PM andypugh: How can you use a morse shank on a reverse spotface?
01:58 PM cradek: well MT sorta does lock
01:59 PM JT-Shop: andypugh: your package is on the way
01:59 PM andypugh: Thanks, I got the email from USPS
01:59 PM andypugh: I will see how it works out after taxes, but your price + postage is about half of eusurplus + postage.
02:00 PM JT-Shop: should not be any taxes :)
02:00 PM andypugh: Well, we can hope.
02:10 PM andypugh: cradek: Well, I guess so, but well enough to cut on the pull?
02:29 PM syyl: it takes quite a bit of "pull" to get a morsetaper out
02:29 PM syyl: i would not worry about a spotfacetool
02:36 PM gloops: i have to tap mine out of the headstock with a length of 10mm bar from the back, that could be a matter of wear though it is over 100 years old heh
02:36 PM gloops: tailstock sorry
03:19 PM Tom_L: JT-Shop orange maybe is lower speed ethernet
03:32 PM JT-Shop: let me look at it again, it's all working now down in the beer cave
03:35 PM JT-Shop: yep still orange
03:36 PM Tom_L: do you have gigabyte ethernet down there?
03:36 PM Tom_L: it's likely either 10 or 100mbit
03:44 PM JT-Shop: I think the pie is 10/100 only and yea I have gigabyte everywhere I think...
03:44 PM JT-Shop: turns out you had to connect to a monitor and a mouse just to turn on SSH
03:46 PM JT-Shop: I bought a wifi adapter but found out the pie 3 has wifi built in
03:47 PM MrHindsight: 10/100 only https://www.raspberrypi.org/magpi/raspberry-pi-3-specs-benchmarks/
03:49 PM Tom_L: odd about the monitor because you should be able to ssh into it headless
03:49 PM Tom_L: or can you once it's set upt?
03:50 PM MrHindsight: all depends on the default configs his distro is using
03:51 PM JT-Shop: they turned off ssh in 2016, in fact when I looked everything is turned off for interfaces
03:51 PM Tom_L: taking the microsoft route ehh..
03:51 PM MrHindsight: I expect everything to be broken on distros for the rpi, so I'm happy when anything actually works
03:52 PM Tom_L: what about bbb? is it any better?
03:52 PM Tom_L: i don't keep up on the arms race :)
03:52 PM JT-Shop: actually loading the image was very painless and fast
03:52 PM JT-Shop: bbb?
03:53 PM Tom_L: beagle bone black
03:53 PM Tom_L: or whatever color they're up to now
03:56 PM JT-Shop: ah ok
04:04 PM JT-Shop: I just figured out I can watch my chickens with my phone lol
04:25 PM gonzo_: more sociable to wach your phone with your chickens
04:39 PM andypugh: I have a friend who has the email address thegodofgrease@an_isp
04:39 PM andypugh: (He is a triboligist, specialising in grease)
04:49 PM MarcelineVQ: is his favorite film The Greasy Strangler?
04:55 PM Deejay: gn8
07:14 PM MarcelineVQ: gosh plugs you can wire yourself expensive here :(
07:34 PM sync: MarcelineVQ: yeah milspec connectors are fun, although the cable is almost more expensive
07:40 PM MrHindsight: clever chinese https://ibin.co/3eGLglK24AIx.jpg
07:40 PM MrHindsight: they leave you with extra wire since every connector is wired differently
07:41 PM MrHindsight: this way you don't deform the cable with the strain relief :)
07:47 PM MarcelineVQ: sync: interestinly I've found a plug with 5' of wire for the same price as the plug :X
07:49 PM sync: well, MarcelineVQ stuff like this http://sync-hv.de/autowagens/autosport.jpg
07:50 PM sync: they cost around $50 per half and ~50ct per pin
07:50 PM MarcelineVQ: ah I just meant the actual wire part was do it yourself, extension cord ends essentially
07:52 PM malcom2073: fwiw, there are *way* cheaper circular connectors than the "mil-spec" stuff, that are just as good
07:53 PM sync: the connectors are not even milspec
07:53 PM sync: but even higher
07:53 PM pfred1: perfection is the enemy of good enough
07:54 PM sync: turns out that putting connectors on a F1 gearbox is way harder on them than milspec
07:54 PM pfred1: what do connectors on a gear box do for you?
07:55 PM sync: make it shift?
07:55 PM malcom2073: milspec being the generic name for 38999 connectors
07:55 PM pfred1: I always thought that was what forks were for
07:55 PM sync: a f1 gearbox does not have forks
07:55 PM pfred1: maybe it should?
07:56 PM malcom2073: them engineers so sharp, it has knives
07:56 PM sync: why should it pfred1
07:56 PM sync: it would be slower that way
07:57 PM pfred1: I've always found forks to be fast enough for me
07:57 PM sync: so do your forks shift without loss of output torque?
07:57 PM sync: if they don't they don't cut it
07:58 PM malcom2073: Well no they don't cut, they're forks
07:58 PM pfred1: once I blew a transmission up and I asked the guy at the shop, So, did I miss the gear?
07:58 PM pfred1: he said, Hell no you sank it!
07:59 PM sync: malcom2073: I tried the plastic circular ones and did not like them
07:59 PM pfred1: it made me feel somewhat better
07:59 PM sync: and I'm tooled up for the 38999 ones
08:00 PM malcom2073: I have a huge box of 38999's if you want them, totally random assortment :P
08:00 PM malcom2073: They're old though, so can't get mates anymore
08:00 PM pfred1: no two go together?
08:00 PM andypugh: I have a drawer full of Lemos (and the crimps and tooling)
08:01 PM andypugh: And a fair few M23 connectors for servos.
08:01 PM malcom2073: I hate lemos
08:01 PM pfred1: andypugh I thought you died
08:01 PM malcom2073: M12 are my new favorite though
08:01 PM sync: yeah m12 is cheap and nice
08:02 PM sync: lemos are nice, until you need a replacement and don't know which type it is
08:02 PM andypugh: But what I actually quite like, for steppers and AC motors are the Neutrik Speakons. Really quite cheap, but tough and very good contacts (hidden multi-finger wipong contacts)
08:02 PM malcom2073: Or have to solder it in the field :P
08:02 PM andypugh: Soldering Lemos is horrible. But if you get the crimp style and have the tool they are fine.
08:03 PM malcom2073: I've never used the crimp, that sounds much better
08:03 PM andypugh: pfred1: I think I would have noticed?
08:03 PM sync: yeah, I have some of the 10mm 16 pin ones
08:03 PM sync: they really suck to solder
08:03 PM pfred1: andypugh that's what they say
08:03 PM andypugh: malcom2073: You crimp the pins onto the wire first, then push them all in together,
08:03 PM andypugh: (same as M23)
08:04 PM malcom2073: andypugh: yeah, I much prefer crimp connectors
08:04 PM malcom2073: we've been using samtec circulars at work lately, and they make me miserable heh
08:04 PM pfred1: andypugh http://www.independent.co.uk/news/science/what-happens-die-brain-activity-life-heart-beating-death-after-eeg-study-research-a7620131.html
08:05 PM pfred1: just when you thought it couldn't get any more terrifying
08:06 PM andypugh: malcom2073: These (relatively) cheap crimping tools seem to be almost better than the real ones, in that the end-stop is adjutable. https://www.amazon.com/ProsKit-300-015-Crimper-Closed-Contacts/dp/B003WRJATU/ref=pd_bxgy_469_img_2?_encoding=UTF8&psc=1&refRID=TYMDR3T1KZ3RDSGPR911&dpID=41h%252BAPh0F7L&preST=_SX342_QL70_&dpSrc=detail
08:06 PM cradek: yeah, zooming stock photos and bad music is a shockingly bad way to present a paragraph of text
08:07 PM pfred1: cradek come on I fouhd the music rather relaxing
08:07 PM sync: andypugh: there are adjustable endstop inserts for the dmc crimpers
08:07 PM pfred1: thinking when you're dead is a hell of a thing to contemplate though
08:08 PM andypugh: “The doctors don’t know what the purpose of the activity might be,” Err, perhaps there is no more purpose than any other brain activity? And probably less as the patient is dead?
08:08 PM cradek: eh, it'll be over soon enough
08:08 PM pfred1: andypugh maybe they'll bring one back and ask them?
08:08 PM cradek: that's a notoriously suspicious technique
08:09 PM cradek: ON A STEPLADDER
08:09 PM cradek: sorry
08:09 PM malcom2073: Oh hey it's cradek, long time no see
08:10 PM pfred1: I've heard that people beheaded can make faces
08:10 PM malcom2073: Chickens can run around after being beheaded
08:10 PM pfred1: yeah we're not chickens though
08:10 PM pfred1: snaje heads are supposed to remain dangerous removed from the body
08:10 PM pfred1: snake even
08:11 PM Tom_L: hey now.. Elvis isn't dead..
08:12 PM cradek: Tom_L: gramma sure is
08:14 PM andypugh: Tom_L: https://goo.gl/maps/RAWKjXt7AWG2
08:15 PM cradek: wow
08:15 PM cradek: how did you know about this?
08:15 PM Tom_L: sitting on top a stop sign
08:16 PM andypugh: cradek: I spent 2 weeks driving past it several times a day taking cars to the top of the mountain to test altitude corrections.
08:16 PM Tom_L: turns out it's a dead end street
08:19 PM Tom_L: andypugh, doesn't look like there's much else out there either
08:21 PM andypugh: Well, the hill opposite is wierd, it seems to be pretty much a vertical wall on the opposite side, but I never found a good vantage point to be sure.
10:32 PM RyanS: is this a poor design? http://www.ausee.com.au/shop/category.aspx?catid=8266 the insert just seems to push farther into the blade, the lower part of the slot snapped off. I dont know if the design causes this or if it's crap quality tool steel
10:34 PM pfred1: RyanS you can make those out of circular saw blades
10:34 PM pfred1: I've seen people do it
10:35 PM pfred1: now i know where they got the idea from I thought they were just being clever
10:36 PM hazzy: RtanS: What you've got seems like pretty much the typical design. Never have had, or heard of, people having trouble with them
10:37 PM hazzy: Maybe you just got a bad one, not hardened right?
10:39 PM RyanS: I think so. You should also be able to power feed--i've seen videos of cncs feeding parting tools at high rates. This one snapped at conservative rates
10:41 PM RyanS: might have to fork out for a brand name blade
11:00 PM hazzy: RyanS: Just thought of something, if the parting tool is set too high it will put significantly more trust on the insert
11:00 PM hazzy: A parting tool should be set about 10thou below the axis of rotation
11:01 PM hazzy: Of course, depends on the size of stock you are parting
11:02 PM RyanS: hmm, it broke on 75mm brass
11:02 PM Tom_L: brass likes to grab
11:02 PM RyanS: usually have tip on centre line
11:03 PM RyanS: use hss on brass?
11:03 PM Tom_L: usually but i'm not sure it matters
11:15 PM archivist: flat top no rake for brass
11:16 PM archivist: RyanS, also your machine and work must be rigid enough for parting
11:21 PM RyanS: this is mine https://www.machineryhouse.com.au/L682D
11:22 PM MarcelineVQ: omy :X
11:23 PM RyanS: yeah.... Australian prices, I know
11:24 PM hazzy: RyanS: Do you have the compound mounted? That is a source of a lot of flex in those lathes
11:26 PM RyanS: mounted ? not very practical to remove just for parting
11:27 PM archivist: overhang from chuck, cutter on centre etc
11:27 PM archivist: there is a tendency to pull into the cut that you have to avoid and think about
11:28 PM archivist: if you cut too fast the chipps cannot clear and that makes it worse
11:28 PM archivist: lack of lube there too
11:29 PM archivist: on a capstan lathe we had it upside down on the rear to avoid some of that
11:29 PM hazzy: RyanS: Ah, I was assuming the lathe was CNC, but you never said it was. :) Most of the time you would remove the compound on a converted lathe, hence the question
11:30 PM RyanS: hazzy ah ok
11:30 PM archivist: the tool overhang is part of the rigidity more=less
11:32 PM RyanS: archivist would rear mounted right way up, turn in reverse work too?
11:33 PM archivist: it is upside down so that it bends back under the cutting force rather than pull in, no reversing
11:34 PM archivist: if the bar sticks out from the chuck too far it resonates and bends and climbs over the bent forward tool, bang
11:34 PM archivist: for tool in front like you had
11:35 PM archivist: I dont thing there is a manual lathe user that has not had that bang
11:36 PM RyanS: make your own rear mounted blade holder? those parting blocks are $$$$ for what they are
11:37 PM archivist: those tools "just work" if used properly on a good lathe
11:37 PM archivist: the insert gets the chips out a lot easier as well
11:38 PM archivist: we had flat top hss on the rear toolpost
11:38 PM RyanS: and on shit lathes? :-)
11:39 PM archivist: we were parting a few hundred parts off 3/4" bar
11:40 PM archivist: on your lathe it either has loose headstock bearings or user error
11:41 PM RyanS: funny, when i first got this lathe it seemed huge. it's seemingly shrunk since then
11:42 PM archivist: part off at a slow rpm
11:43 PM archivist: until you know your machine and material