#linuxcnc Logs
Nov 23 2019
#linuxcnc Calendar
02:26 AM Deejay: moin
06:04 AM jthornton: morning
06:04 AM XXCoder: hey
06:11 AM Tom_L: morning
06:13 AM jthornton: got a new rain gauge and was reading the warranty and I had to crack up... limited 2 year warranty, send proof of purchase, name and address and $5 for a replacement
06:13 AM jthornton: lol it only cost $4.95 at Manerds
06:13 AM XXCoder: well its a replacement
06:13 AM XXCoder: just not free one
06:13 AM XXCoder: :)
06:15 AM jthornton: Tom_L, once I got the truck and 5x10 trailer out it seemed empty
06:24 AM Tom_L: must be a pretty small quad
06:25 AM jthornton: yea that is my Tiny Whoop with a 67mm frame
06:25 AM Tom_L: fairly stable?
06:26 AM jthornton: yea, just a bit touchy with altitude
06:29 AM jthornton: I've had it since 2017 but could not find any FPV goggles that worked with glasses
06:29 AM XXCoder: im annoyed when someone designs something like everyone have perfect vision
06:30 AM Tom_L: i doubt most ppl do
06:30 AM XXCoder: dont ask me what will happen in 39 days though, I don't have 2020 vision
06:31 AM Tom_L: i was kinda surprised last time i got my drivers license though.. i passed without vision correction
06:31 AM Tom_L: i think their new test was easier than previously
06:33 AM jthornton: I wonder when I have to get mine renewed...
06:33 AM Tom_L: iirc mine is still every 6 yrs
06:34 AM Tom_L: i think the boys' is 4
06:34 AM XXCoder: I need to get new glasses lol
06:34 AM XXCoder: its bit old now. 3 years? or 4
06:35 AM Tom_L: mine are probably older than that but i have a pair i like
06:35 AM Tom_L: the focal point on the newer pair is off for most of what i do
06:37 AM jthornton: I just use cheap reading glasses
06:37 AM XXCoder: same
06:38 AM XXCoder: i wear it permently sadly due to muscle issue
07:01 AM XXCoder: I wonder how did we start with precision stuff
07:01 AM XXCoder: lathe is easy enough, but rest dunno
07:02 AM jthornton: watch the woodwright shop...
07:03 AM XXCoder: older tv show it seems?
07:04 AM jthornton: I think he still does shows
07:04 AM XXCoder: hmm ok
07:05 AM jthornton: some of the episodes he is much older
07:05 AM XXCoder: hopefully at latest shows ;)
07:05 AM jthornton: lol
07:05 AM XXCoder: otherwise random age dont make semse lol
07:11 AM Javabean: xxcoder https://www.youtube.com/watch?v=gNRnrn5DE58
07:12 AM XXCoder: nice thanks will watch later.
07:19 AM Javabean: its an interesting video... but i warn you, your question leads to a very deep rabbit hole... not that i have been there before
07:20 AM XXCoder: not first subject I went into alice zone
07:35 AM Loetmichel: anyone a good idea what 2mm diameter tool to use (preferably from sorotec.de) that can mill 1mm sheet steel on a CNC 6040 without breaking every few minutes?
07:36 AM Loetmichel: wasted quite a few "alu" tungsten carbide 2mmm twoflute now.
07:36 AM XXCoder: cooling
07:36 AM XXCoder: shitload of cooling
07:36 AM XXCoder: it simply cant get rid of heat fast enough, not tool that small
07:37 AM Loetmichel: o, its not sturdy enough
07:37 AM Loetmichel: it catches in the sheet metal and rips off
07:37 AM Loetmichel: its doesent even get warm at 24krpm and 0.1mm doc
07:38 AM XXCoder: hmm lifting material could also break tool
07:38 AM Loetmichel: also carbide tools dont get weak, they cut the same at room temp and red hot
07:38 AM Loetmichel: yes, thats what happening
07:38 AM XXCoder: wonder if you could just use double carpet tape
07:38 AM Loetmichel: but the core issue is with the weak core of the 2 flute
07:39 AM XXCoder: then you would have diffulity getting sheet off afterwards without bend
07:39 AM Loetmichel: i have a vacuum table
07:39 AM Loetmichel: it doesent lift up far
07:39 AM XXCoder: thats better yeah. but why not make custom "fixture"
07:39 AM Loetmichel: just enough to catch on lose cutouts
07:39 AM XXCoder: its a sheet with vacuum areas but grooves sealing off areas you plan to cut
07:40 AM XXCoder: so vacuum dont weaken ever
07:40 AM Loetmichel: the vacuumm is stong enough
07:40 AM Loetmichel: the small parts i cut out are the problem
07:40 AM XXCoder: tabs and grind down later?
07:41 AM Loetmichel: tehy HAVE tabs
07:41 AM Loetmichel: tehy just move enough to catch the mill bit
07:41 AM XXCoder: out of ideas lol
07:41 AM XXCoder: mybe slower
07:41 AM Loetmichel: as i said: a sturdier bit would help
07:41 AM XXCoder: but then rubbing
07:41 AM Loetmichel: those "aluminium" angle twoflutes have basicall no core left
07:41 AM XXCoder: is there such thing as cobolt tool that snmall
07:42 AM XXCoder: alum sheets wouldnt high speed tool be better for that?
07:42 AM Loetmichel: no, steel sheets
07:42 AM XXCoder: doh
07:42 AM XXCoder: yeah
07:42 AM XXCoder: late for me lol
07:43 AM Loetmichel: the cutter i use is made for alu
07:43 AM Loetmichel: so its ground to be SHARP and have much swarf channel, ´leaving not much shaft at all
07:44 AM Loetmichel: i was searching for a 3 or three flut ground for steel wiht less swarf channels and hence more sturdy
07:44 AM Loetmichel: 2o or three
07:44 AM XXCoder: would one flute be even stronger?
07:44 AM Loetmichel: those alu carbide bits snap off ant the end of the flutes
07:44 AM Loetmichel: every time
07:44 AM Loetmichel: dont think so
07:45 AM Loetmichel: the more flutes you have the bigger the core is usually
07:45 AM XXCoder: makes sense
07:46 AM XXCoder: but less room for swarf I guess
07:46 AM XXCoder: needing higher rpm or speed
07:46 AM XXCoder: erm slower speed
07:46 AM XXCoder: I have ran really tiny tools at work
07:46 AM XXCoder: like 1/32 lol
07:47 AM tiwake: I just found out yesterday that fanuc mills don't have a G12/G13 command
07:47 AM Loetmichel: hihi, smallest carbide tools i have are 0.4mm diameter
07:47 AM tiwake: that is really crappy, because its one of the most useful canned commands
07:47 AM Loetmichel: "dont sneeze near it!"
07:47 AM XXCoder: lol
07:48 AM * Javabean makes note to be careful with .4mm tools
07:48 AM Loetmichel: they snap if you do so much as look at them angry :-9
07:48 AM tiwake: Loetmichel: I was just setting up a lathe for a part that requires a 0.075" boring bar...
07:48 AM tiwake: or rather, thats the smallest hole the boring bar can fit into
07:49 AM tiwake: heh
07:49 AM Loetmichel: thats about twice a hair..
07:49 AM Loetmichel: how long?
07:49 AM XXCoder: 1/32 is .78mm approx
07:49 AM Loetmichel: or rather how deep?
07:49 AM XXCoder: *.79
07:49 AM Loetmichel: @ tiwake
07:49 AM tiwake: no, a hair is about 0.005" approx.
07:49 AM Loetmichel: XXCoder: thats what i meant. i regularily use 0.8mm bits
07:49 AM Loetmichel: they are ok
07:50 AM Loetmichel: the 0.4mm ones are another thing entirely though
07:50 AM XXCoder: yeah pretty reasonably strong. I used em to engrave inocel
07:50 AM XXCoder: isnt that 1/64. we have those too but very rarely used
07:51 AM XXCoder: ball endmill, for engraving serial #
07:51 AM tiwake: ja
07:52 AM Loetmichel: aaaand the coworker broke another mill bit :-(
07:52 AM Loetmichel: maan thats getting expensive
07:53 AM XXCoder: damn you insulted it, it hurt its feeling and gave up ;)
07:53 AM tiwake: endmills that small can't be that expensive... are they?
07:53 AM XXCoder: yeah even if cheap tool it adds up
07:53 AM XXCoder: ti if its like $10 if it breaks 10 thats 100 bucks
07:53 AM Loetmichel: https://www.sorotec.de/shop/product_info.php?info=p441_vhm-fraeser-zweischneider-alu---2-0mm.html
07:53 AM Loetmichel: kinda
07:53 AM tiwake: well sure
07:53 AM Loetmichel: depends on how many you break ;)
07:54 AM XXCoder: loet that engraving I menioned? its like 30 parts per tool lol
07:54 AM XXCoder: and its good tool too
07:54 AM XXCoder: and we engrave 1500 or more parts
07:54 AM XXCoder: so much dosh
07:54 AM Loetmichel: yeah, but less than one monitopr back cover per tool gets ridicolous soon
07:55 AM XXCoder: yeah thats where it must be solved
07:55 AM XXCoder: man so glad we now send em off to be laser engraved
07:55 AM XXCoder: no. more. sorting. by. 0.0005"
07:56 AM tiwake: heh
07:56 AM XXCoder: ti .0005 too shallow is very visiable, and if .002 too deep it kills part
07:56 AM XXCoder: its $75 part
07:57 AM tiwake: yeah, engraving is very sensative to depth
07:57 AM XXCoder: expecially for inocel, it eats tool
07:58 AM tiwake: is diamond good for that?
07:58 AM tiwake: I'd imagine it would be
07:58 AM XXCoder: probably but whats better? endless light
07:58 AM XXCoder: photons dont get wear
07:58 AM tiwake: your eyes do though... heh
07:59 AM XXCoder: lol dont look at laser with your remaining eye
07:59 AM tiwake: but yeah, laser engraving for the win
07:59 AM XXCoder: heyy
07:59 AM XXCoder: Loetmichel: laser cutting?
07:59 AM XXCoder: definitely need powerful one for steel
08:00 AM Loetmichel: XXCoder: its only 50 or so back walls for TFT monitors the manufacturer did wrong
08:00 AM Loetmichel: we have to cut some more threads and a couple of plug holes in each
08:00 AM XXCoder: yea but laser machine can make more parts in future, afterwards?
08:01 AM Loetmichel: the (Dsub) plug holes are the problem, they eat mill bits like crazy
08:01 AM Loetmichel: those CNC 6040 are NOT meant for steel
08:01 AM tiwake: I would say need at least 300 watt laser for cutting steel
08:01 AM Loetmichel: we usually outsource series production
08:01 AM tiwake: thin stuff
08:01 AM XXCoder: loet I wonder if machine was "hopping" on z, that would also break tool
08:01 AM XXCoder: we had this problem with office mill, haas
08:01 AM Loetmichel: its only prototypes and "mishap correction" i do on the mills here
08:02 AM XXCoder: it would move z down and up like .0001", but it breaks tools faster
08:02 AM Loetmichel: its simply not rigid enough in the gantry for steel, thats all
08:02 AM XXCoder: rapidly move down constantly due to spindle issue
08:02 AM Loetmichel: it starts chattering and breaks off
08:07 AM XXCoder: well hope you find a solution
08:08 AM XXCoder: probably likely non-alum carbide tool
09:12 AM Tom_L: Loetmichel, have you tried a cobalt cutter?
09:14 AM Tom_L: that and maybe double back tape to hold them in place
09:15 AM XXCoder: i menioned both, didnt think he saw first one tho
09:16 AM Tom_L: just catching up...
09:17 AM Tom_L: also try different feedrates etc
09:17 AM Loetmichel: Tom_L: you mean HSS-C?
09:17 AM Tom_L: might be worth a try
09:18 AM Tom_L: not as hard but might be 'tougher' than carbide
09:18 AM Tom_L: maybe 'more forgiving' might be the right words
09:19 AM XXCoder: cobolt is very nice yeah but money ouch
09:19 AM XXCoder: at work we use that maybe for 2 jobs total out of hundreds
09:19 AM Tom_L: no worse than carbide
09:20 AM XXCoder: hmm remembered it was quite a bump in price
09:20 AM XXCoder: well off to bed, its already 7! normally sleep at 5
10:11 AM jymmmm: Good morning folks
10:12 AM Tom_L: yi
10:12 AM Tom_L: hi
10:19 AM gloops: hmm, preliminary tests show cutting slate on the router is very easy
10:19 AM gloops: with tct wood bit and diamond tip cutter
10:19 AM Tom_L: what sort of cutter?
10:20 AM gloops: tried tct router bit first - glides through it, dont know how long for though
10:20 AM Loetmichel: gloops: it is
10:20 AM Loetmichel: with a tungsten caribide bit... until you hit some quarz inclusions
10:20 AM Loetmichel: been there done that
10:21 AM gloops: hmm yeah - wondered how long a tungsten bit would last, guess id i have to make something that took a while to run, just been doing simple squares to test
10:22 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13206&g2_imageViewsIndex=1 <- new mill bit vs after a few slate blocks hollowed out
10:22 AM Loetmichel: and yes, thats tungsten carbide ,)
10:22 AM gloops: diamond bit leaves a very good finish, polished
10:23 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13203&g2_imageViewsIndex=1 <- finish wasnt that bad, but the quarz inclusions killed mill bits by the dozen
10:23 AM gloops: lol, yeah i suppose thats bound to happen Loetmichel, suppose it depends on the value of the job too, cheap throwaway bits might be viable
10:24 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13191&g2_imageViewsIndex=1 <-seconmd try was a lot better
10:24 AM gloops: might be getting hot?
10:24 AM gloops: that looks smart
10:24 AM Loetmichel: not with all that coolant applied
10:25 AM gloops: ive not used any coolant, just run it dry, 300mm/min
10:25 AM Loetmichel: was just a stand for a trophy
10:25 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=13185&g2_imageViewsIndex=1
10:27 AM gloops: i need to get into the acrylic/led stuff
10:27 AM gloops: that base looks smart
10:38 AM JT-Shop: lets see if this PC has the same issue of dropping out
10:41 AM * Javabean will send JT positive vibes to stay online, still won't share out his coffee tho
10:47 AM JT-Shop: lol, send me a new motherboard for that pc instead
10:48 AM * Javabean looks around... seems to be fresh out of 'new motherboards'
10:48 AM Javabean: sorry, can't help like that
10:55 AM jymmmm: JT-Shop Dont have a spare pi you can use?
10:57 AM JT-Shop: hmm, I think I have a Rpi3 somewhere with damaged i/o
10:57 AM JT-Shop: that would help with the desk clutter lol
10:58 AM jymmmm: so would a dumpster :D
12:20 PM _unreal_: hello
12:20 PM _unreal_: been working on my daughters mini cnc machine
12:20 PM _unreal_: REALLY coming along now
12:20 PM _unreal_: I just finished fully aligning and mounting the last two motors and aligning the couplers
12:21 PM Tom_L: cool
12:21 PM _unreal_: I'll take a pic and upload it when I get to it
12:21 PM _unreal_: I also got my BASE to my new home cnc machine epoxyed at work
12:21 PM _unreal_: so its well still sitting in my van :)
12:22 PM _unreal_: but my next step is get it out clean off any dust check for any sharps, and start mounting the primary Axis rails Y on it
12:25 PM _unreal_: I guess my next step is to grab the kid and clean out the car :/
12:25 PM _unreal_: joy
12:33 PM miss0r: goodevening
12:35 PM _unreal_: OMG duh.... I can use one of those crazy small liner rails for the PEN for my daughters cnc :)
12:35 PM _unreal_: so I can spring load it and just have a simple retainer to clamp the pen
12:49 PM gloops: are you making a new cnc _unreal_?
12:53 PM _unreal_: yes
12:53 PM _unreal_: 3
12:53 PM _unreal_: one for my daughter really small
12:53 PM _unreal_: a new one for me at home
12:53 PM _unreal_: my current one is fine but just not enough work area
12:53 PM _unreal_: and a BIG powerful one for work
12:54 PM jymmmm: Tom_L ping
12:55 PM jymmmm: Tom_L https://i.imgur.com/ltG2LuZ.jpg
12:59 PM Tom_L: mine is a flat one
01:00 PM Tom_L: where's it supposed to leak at?
01:02 PM jymmmm: I HEARD the drain pipe, the electronics are mound on the lid of the bottom cover, so IF it did leak, it would be directly on to the electronics.
01:03 PM jymmmm: I wanted to see for myself, I don't see anything noticable, but I might try to make a plastic cover just in case to divert water elsewhere
01:03 PM jymmmm: Tom_L A little suprised, but even the screws hold thebottom cover are SS
01:03 PM Tom_L: makes sense
01:04 PM jymmmm: Yeah, just surprised when the did NOT stick to my magnetic parts holder
01:05 PM jymmmm: Tom_L Nice thick cooling fan too, about 2" deep
01:09 PM CaptHindsight: jymmmm: new flux capacitor?
01:10 PM jymmmm: CaptHindsight: 15L ultrasonic cleaner
01:11 PM jymmmm: Tom_L And unlike the amazon pic, it came with a SS ball vavle instead of brass.
01:12 PM jymmmm: CaptHindsight: https://www.amazon.com/gp/product/B0140M8H9E/
01:12 PM jymmmm: I got the 15L 60A one
01:16 PM CaptHindsight: whacha cleanin?
01:18 PM jymmmm: CaptHindsight: "Officially" dentures and CPAP medical gear, Unofficially, I had HSA moneys I want to spend before the end of the year and ultrasonic cleaners for those devices are on the "approved" list. But I am starting to find things around to clean, like razors, knifes, jewlery, small parts that would be a PITA to clean otherwise.
02:07 PM _unreal_: OMG annoying headache wont go away
02:07 PM _unreal_: so my motor JUST arrived in the mail
02:16 PM adamj12b: Looking for some tuning advice. I cannot seem to tune out this over/under shoot when the X or Y stops accelerates and transitions to cruising.
02:16 PM adamj12b: Here is a picture. https://photos.app.goo.gl/XG4Aak7XmRCeY8q76
04:06 PM Deejay: gn8
04:24 PM Elmo40: soo quiet
04:24 PM adamj12b: Has been for the last few hours
04:25 PM Elmo40: weekend thing, i guess
04:35 PM flyback: <flyback> https://www.goldmine-elec-products.com/prodinfo.asp?number=G20206
04:35 PM flyback: <flyback> these are normally $25
04:35 PM flyback: <flyback> this model is special
04:35 PM flyback: <flyback> it's unreasonable good at reading CANUCKED UP discs
04:36 PM * flyback rubs Elmo40 against his scratched up cd collection
04:36 PM Elmo40: i'll smooth out all the rough edges!
04:38 PM flyback is now known as phlyback
04:39 PM phlyback is now known as flyback
04:54 PM _unreal_: I only just got back, took my daughter to the park had lunch and I picked up some washers. so I can start putting together My bigger home cnc
05:26 PM jymmmm: Here's What Happens When an 18 Year Old Buys a Mainframe... https://www.youtube.com/watch?v=45X4VP8CGtk
05:55 PM adamj12b: jymmmm That was interesting
06:08 PM jymmmm: adamj12b: Yeah, it kinda was. *I* stopped collecting vintage LOOOONG ago :)
06:09 PM jymmmm: adamj12b: I had a NeXT workstation, sold it. But if I had a NeXT cube, I would have kept it
06:12 PM * skunkworks wants a trunion
06:17 PM jymmmm: skunkworks: Talk to JT, I know he has a cannon :D
06:21 PM skunkworks: uh - heh
06:24 PM jthornton: hmm
06:25 PM _unreal_: I've seen that video before hehe
06:25 PM _unreal_: I finally feel like I've been making some head way
06:26 PM _unreal_: random question, how many of you still have random radio shack project boxes laying around?
06:26 PM _unreal_: I just found 3 more
06:26 PM _unreal_: and I'm trying to locate a small one I know I have SOME where
06:26 PM XXCoder: maybe its inside one of larger ones ;)
06:26 PM _unreal_: so i can mount it on my daughters mini machine as kind of a junction box to I can do the main wire break out.
06:27 PM _unreal_: naa
06:27 PM _unreal_: I think its up in the attic :/
06:27 PM _unreal_: in my electronics random ness
06:27 PM _unreal_: pile
07:38 PM Centurion-Dan2 is now known as Centurion_Dan
07:55 PM norias: hello
08:04 PM _unreal_: lohi
08:05 PM norias: what's going on?
08:05 PM norias: any chatter in here about OpenCN?
08:05 PM _unreal_: ahhh.. i'm sure there has been I have not seen anyone talking about it personally
08:21 PM Tom_L: norias, CaptHindsight posted these the other day: https://forum.linuxcnc.org/show-your-stuff/37855-announcement-new-fork-opencn
08:22 PM Tom_L: https://www.youtube.com/watch?v=U7JCOAdtCOc
08:34 PM norias: looks like fun stuff
08:51 PM _unreal_: hum
08:51 PM _unreal_: I've never really heard of opencn not sure what it is about?
08:52 PM gregcnc: seems like the biggest change they made is a new trajectory planner including jerk control
09:03 PM _unreal_: trying to decide what orientation I should mount My X axis on this new cnc machine
09:04 PM _unreal_: sigh 21 days uptime I suppose I should reboot
09:04 PM _unreal_: sooner then later
09:12 PM jymmmm: gregcnc: I'd much rather prefer dumbass control -shrug--
09:13 PM _unreal_: dumb ass control heh
09:13 PM _unreal_: remind me of "redneck rampage"
09:19 PM Tom_L: Jymmm, it's a whole new level of control
09:22 PM _unreal_: do tell
09:39 PM _unreal_: quite night
09:59 PM norias: new trajectory planner doesn't sound bad
09:59 PM norias: we'll see
10:01 PM SpeedEvil is now known as Guest67766
10:17 PM fjungclaus1 is now known as fjungclaus
10:35 PM _unreal_: any one around?
10:35 PM XXCoder: im not around
10:35 PM XXCoder: im right here
10:35 PM _unreal_: toying with different setups
10:35 PM norias: toys
10:35 PM norias: yes
10:35 PM _unreal_: I'm trying to figure out how i want to setup Z on this new cnc of mine
10:36 PM norias: what are your options?
10:37 PM _unreal_: https://drive.google.com/open?id=1adQweaGjSkkFvFvusslkvgVxxnET7f9l
10:37 PM _unreal_: one is to have X stacked
10:38 PM _unreal_: like in the photo OR side by side
10:40 PM _unreal_: the other option is to set it up like this https://www.youtube.com/watch?v=ljSHwaRmlQ8 skip to 1:30
10:41 PM _unreal_: ?
10:41 PM _unreal_: I'm trying to decide how I want to mount my alunium extrusion
10:42 PM _unreal_: I'm thinking the method like in the youtube link with the extrusion on end would be the stronger design?
10:42 PM _unreal_: BUT if I go with the IMAGE link I can offset the mount to " " maximize the work area
10:43 PM _unreal_: idealy I want the strongest method
10:43 PM _unreal_: OR I'll add aditional supports
10:43 PM Tom_L: you should experiment ideas with a cad model
10:43 PM _unreal_: LOL
10:43 PM Tom_L: i totally scrapped my first idea
10:44 PM _unreal_: Tom_L, you post popped up a second before a torrent file finished and its compleete sound is a high pitched BELL ding.
10:44 PM _unreal_: ?
10:44 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Bad_idea_design.jpg
10:44 PM Tom_L: i abandoned that one
10:44 PM _unreal_: That looks like it would rack
10:44 PM XXCoder: what wrong with that one?
10:45 PM Tom_L: XXCoder i didn't like it?
10:45 PM Tom_L: i went so far as to mock it up
10:45 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Channel_design.jpg
10:45 PM XXCoder: hmm maybe it was someone else who shared similiar cnc machine
10:45 PM Tom_L: another abandonment
10:47 PM _unreal_: uploading an other photo
10:48 PM _unreal_: https://drive.google.com/open?id=1cZ_rTRuKh85aVzAOJW3WQTf6sAHK0dZi
10:48 PM Tom_L: XXCoder, i partially built it: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Steel6.jpg
10:48 PM _unreal_: What do you think?
10:48 PM XXCoder: yeah thats completely different from completed one I saw
10:49 PM _unreal_: So what do you think from the first photo to this photo ?
10:49 PM Tom_L: i cut it up and re'used the steel of course
10:49 PM XXCoder: yeah steel uis still steel
10:49 PM XXCoder: getting there, unreal
10:49 PM Tom_L: i was afraid that one would be too weak
10:50 PM _unreal_: so from the two photos what do you guys think would be stronger?
10:51 PM Tom_L: i don't like the single angle on either one
10:51 PM _unreal_: ignore the angle
10:51 PM Tom_L: i can't
10:51 PM Tom_L: it's there
10:51 PM _unreal_: this is a question about the extrusion stup
10:51 PM _unreal_: it is for reference
10:51 PM norias: i can't tell what you are trying to do, really
10:52 PM Tom_L: #2 would be a stronger base i think
10:52 PM norias: why not stick to proven designs?
10:52 PM _unreal_: Tom_L, thats my thoughs
10:52 PM Tom_L: norias it's kinda hard
10:52 PM norias: how?
10:52 PM Tom_L: to follow
10:52 PM norias: what am i missing?
10:52 PM _unreal_: Tom_L, i was also flurting with the idea of mounting the spindle between the extrusion
10:53 PM _unreal_: using 4 cars
10:53 PM Tom_L: i used 4 on mine anyway
10:53 PM _unreal_: I would assume that design would provide the greatest amount of rigidity.
10:53 PM norias: i mean
10:53 PM norias: it's aluminum
10:54 PM norias: it's already a floppy noodle
10:54 PM _unreal_: but I'd loose some some work area
10:54 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Z_Axis_Plate2.jpg
10:54 PM _unreal_: norias, its not very flexy
10:54 PM Tom_L: that's the start of my Z plate
10:54 PM _unreal_: OH hehe you have tape or something around the gearing block
10:55 PM _unreal_: it was freaking me out
10:55 PM norias: https://drive.google.com/file/d/1cZ_rTRuKh85aVzAOJW3WQTf6sAHK0dZi/view
10:55 PM _unreal_: gearing I mean linear bearing
10:55 PM norias: i'd do whichever one that is
10:55 PM Tom_L: to keep the bearing retainers in yes
10:56 PM norias: but i feel like the best bet is to keep the bridge stationary and move the bed
10:56 PM norias: at least in the X
10:56 PM _unreal_: norias, that has pros and cons
10:56 PM norias: and use as many bolted connections as possible, lol
10:57 PM CaptHindsight: Stuart is doing a good job of drawing out the details behind OpenCN
10:57 PM _unreal_: I dont want to move the bed
10:57 PM Tom_L: CaptHindsight, oh?
10:57 PM norias: _unreal_: it allows you to center the ballscrew better
10:57 PM _unreal_: who says I'm going to use ball screws
10:57 PM norias: what are you going to do, synchronize two ballscrews for moving the bridge in x?
10:58 PM _unreal_: norias, X only needs a single drive train
10:58 PM _unreal_: Y will require dual
10:58 PM CaptHindsight: Tom_L: he's been asking the devs about the motives and comparisons to LCNC
10:58 PM norias: so move the bed, instead
10:59 PM norias: then you don't need dual
10:59 PM Tom_L: CaptHindsight, isn't it based off the other branch of lcnc?
10:59 PM _unreal_: I'm not going to move the bed and I'm not going to design a machine like that
10:59 PM Tom_L: forget what it's called...
10:59 PM XXCoder: machinekit?
10:59 PM _unreal_: norias, moving the BED is dead topicwith me
10:59 PM Tom_L: yeah
10:59 PM norias: _unreal_: lol, why?
10:59 PM _unreal_: I built one machine with a moving bed and I HATED IT
10:59 PM CaptHindsight: yes but they are making claims about how their traj planner gives parts a better finish
11:00 PM CaptHindsight: looking for actual data vs just claims
11:00 PM Tom_L: yeah that's what i heard
11:00 PM XXCoder: you could drive two ballscrews with single belt or chain
11:00 PM norias: CaptHindsight: i could believe it. but i get what you are saying
11:00 PM CaptHindsight: just the facts jack
11:01 PM _unreal_: ass
11:01 PM Tom_L: lcnc's tp isn't that old
11:01 PM norias: Tom_L: isn't it like some trapezoid acceleration profile?
11:01 PM Tom_L: i don't know the details
11:02 PM norias: i think so
11:02 PM norias: constantly acceleration as opposed to constant jerk
11:03 PM Tom_L: will this be a public distro?
11:04 PM CaptHindsight: https://www.youtube.com/watch?v=35tHYaDUmZQ
11:05 PM Tom_L: is that with the new one?
11:05 PM Tom_L: i thought he left there btw...
11:05 PM CaptHindsight: https://www.youtube.com/watch?v=Nn1bJ3YAQdI
11:05 PM CaptHindsight: Stuart showing one of his examples
11:05 PM Tom_L: those are older then
11:06 PM Tom_L: i've seen em
11:06 PM CaptHindsight: I think he'sshowing them the finish he gets and the lack of jerk
11:06 PM norias: well, sure
11:06 PM norias: the feeds are slow
11:07 PM Tom_L: norias, have you seen the cinci?
11:07 PM norias: watching it now
11:07 PM Tom_L: personally..
11:07 PM CaptHindsight: with the old planner
11:07 PM Tom_L: it's big iron
11:07 PM norias: no, why?
11:07 PM Tom_L: just wondered if you were at the meet back then
11:07 PM norias: nope
11:08 PM norias: i'm just saying you won't see problems with jerk on something that slow and big
11:08 PM norias: i think these folks are worried about jerk with small, fast machines running small end mills
11:08 PM Tom_L: well that or new modern cncs
11:08 PM norias: where that jerk in a direction change is going to create huge differences
11:09 PM Tom_L: 20k rpm 400 ipm for example
11:09 PM norias: yeah
11:09 PM CaptHindsight: https://www.youtube.com/watch?v=TjMtnqw71lA OpenCN - Machining a demo part
11:09 PM norias: well, and a small end mill
11:09 PM norias: so that any error is a large % of the designed chip load
11:10 PM norias: they also said about limiting jerk to reduce some of the regenerative vibrations that cause chatter
11:10 PM norias: which, on a big thing like this cinci...
11:10 PM norias: there's so much iron sucking that up
11:10 PM Tom_L: yeah
11:11 PM Tom_L: i'd hate to pay the electric bill to keep that thing goin
11:11 PM norias: so, sure, for hobby stuff and big slow machines
11:11 PM norias: i'm sure what lcnc is doing is fine
11:11 PM Javabean: don't you just run your own generator if you have a cinci like that?
11:11 PM norias: there are bigger issues to fry in the systems
11:11 PM norias: Javabean: why?
11:11 PM CaptHindsight: the OpenCN example is on a tiny mill
11:12 PM norias: you mean co-gen stations?
11:12 PM Javabean: no, i mean an electric plant
11:12 PM norias: why?
11:12 PM Tom_L: OpenCN is something to keep an eye on for sure
11:12 PM norias: it'd be so inefficient
11:13 PM norias: we moved away from that on purpose
11:13 PM norias: that's what shops did before there was a grid
11:14 PM Tom_L: that cinci should be running steel, not aluminum anyway
11:14 PM Tom_L: too slow and certainly big enough to handle it
11:14 PM norias: it should run whatever pay the most
11:14 PM Tom_L: i'm sure it was a bargain purchase
11:15 PM norias: great! more profit!
11:15 PM Tom_L: iirc, i think he mapped the spindle motion so it's dead on center
11:15 PM Tom_L: as that ball test shows
11:15 PM norias: get that thing one of those robot attendants and let's go home
11:18 PM Tom_L: _unreal_, https://www.youtube.com/watch?v=hxea_Eho1xo
11:19 PM Tom_L: CaptHindsight, what's Stuart up to these days?
11:22 PM CaptHindsight: Tom_L: last I heard he was at a shop just down the road from the old one
11:22 PM Tom_L: wondered if he was still there
11:22 PM Tom_L: i think they met there once too but i didn't make it
11:24 PM _unreal_: I'm tempted to make this http://ve7it.cowlug.org/dspic-servo.html
11:33 PM Elmo40: what is this openCN about?
11:33 PM Elmo40: do they use any lcnc code??
11:35 PM Tom_L: yes
11:35 PM Tom_L: afik anyway
11:36 PM CaptHindsight: https://gitlab.com/mecatronyx/opencnc/opencn
11:36 PM CaptHindsight: OpenCN - Software architecture https://www.youtube.com/watch?v=U7JCOAdtCOc
11:46 PM _unreal_: do anyof you guys know of any other servo conrol setups?
11:46 PM _unreal_: like that one I just linked?
11:46 PM _unreal_: I'm toying with building that thing OR buying controllers
11:47 PM _unreal_: I believe my "reasonable $" choices are ODRIVE, https://www.open-electronics.org/tarocco-open-source-closed-loop-motor-controller/ and crazy expensive gecko drives
11:49 PM Tom_L: stmbl
11:50 PM _unreal_: ?
11:52 PM Tom_L: https://github.com/rene-dev/stmbl/blob/master/docs/src/Getting%20Started.adoc
11:52 PM _unreal_: $?
11:53 PM _unreal_: thats for brushless
11:53 PM Tom_L: However the drive is also capable of powering AC induction or DC motors. The hardware is also capable of driving 3-phase stepper motors.
11:55 PM _unreal_: hum
11:57 PM _unreal_: is there a final version? looks like everything is still in development
11:57 PM Tom_L: andy and skunkworks both have them and are using them
11:58 PM Tom_L: rene_dev_ was working on a new rev since one of the chips was obsoleted
11:58 PM Tom_L: talk to them