#linuxcnc Logs

May 28 2022

#linuxcnc Calendar

12:00 AM Thorhian7490[m]: They aren’t the most expensive I’ve seen either too. I wouldn’t mind trying both Tegara and Maritool.
12:09 AM Thorhian7490[m]: Also, yes, Chinesium. eBay and Amazon special BT30 ER32 tool holders. Thankfully I bought some tekniks collets.
12:09 AM Tom_L: switch to heatshrink tooling :)
12:09 AM ZincBoy[CAON]066: The mari holders compare well with some of the more name brand ones I have. I like their hydraulic and heat shrink ones.
12:09 AM Thorhian7490[m]: Lol Tom, I wish. Too expensive, since I have no way to uniformly heat them safely.
12:10 AM Thorhian7490[m]: I plan on buying a 5 axis machine, probably a Variaxis from Mazak, someday. The default speed without upgrades on most of their spindles is 12000 RPM, and can go much higher. That’s where I’d probably buy decent heat shrink equipment. Otherwise, generic induction heater would do like you said if I ever bothered. I’d like to try a BT30 tool that integrates via threads, like a Shear Hog.
12:14 AM Tom_L: my kid runs a couple 5 axis zimmerman gantrys at work with 25k + spindles
12:14 AM Tom_L: 300" X
12:14 AM Thorhian7490[m]: Dang
12:15 AM Tom_L: crane load all the parts that run on it
12:15 AM drdoc: Well, RMA submitted.
12:15 AM ZincBoy[CAON]066: It really depends on the type of work you are doing. I really wish I had a much faster spindle since I am mostly doing small parts in aluminum. Balancing also becomes much more of an issue and you need a balancer.
12:15 AM Tom_L: 300 x 50 x 6" blocks
12:15 AM ZincBoy[CAON]066: Wing spars?
12:16 AM drdoc: Is there any reasonable alternative to the Mesa products?
12:16 AM Tom_L: yup
12:16 AM Tom_L: drdoc, no they're the best
12:16 AM ZincBoy[CAON]066: Agreed.
12:16 AM drdoc: that has not been my experience.
12:16 AM Tom_L: ZincBoy[CAON]066, they started a new part recently
12:16 AM Tom_L: some sort of floor
12:16 AM Thorhian7490[m]: Indeed. I wish I had more speed too. I am going to be milling a lot of both big and small aluminum parts, but steel too.
12:17 AM drdoc: the PCIe 6i25 smoked when I plugged a new video card into a system that was plugged in but powered down,
12:17 AM drdoc: no RMA
12:17 AM Tom_L: has a 3deg F temperature tolerance
12:17 AM Tom_L: no idea why
12:17 AM drdoc: this 7i96 has been run maybe 50-60 hours, and babied
12:17 AM ZincBoy[CAON]066: To keep tolerance across the part?
12:17 AM Tom_L: drdoc, he will stand by it
12:18 AM Tom_L: yes
12:18 AM Tom_L: they're spending $$$$ to upgrade the machines for cooling
12:18 AM Thorhian7490[m]: Something that big would grow or shrink by a lot with small temperature differences Tom.
12:18 AM Tom_L: the previous shop was unable to produce it
12:18 AM Tom_L: dunno if they can or not yet
12:19 AM Tom_L: they're not even sure how to unload the material off the truck yet it's so big
12:19 AM ZincBoy[CAON]066: Yes, I would think you would need cooling in the machine (ballscrews/structure) as well to hold over that distance.
12:19 AM Tom_L: some sort of submersible machining
12:20 AM drdoc: I hope so. I've been waiting 9 months to put that machine back into service. If it had failed when I powered everything up, I'd think I might have done something to it, but it's been running without issue for 20-30 hours
12:20 AM ZincBoy[CAON]066: Sounds like an engineering failure with a lack of DFM.
12:20 AM Thorhian7490[m]: Isn’t ballscrew cooling pretty typical on high end machines these days?
12:20 AM Tom_L: drdoc, wait for morning Ca time and ask pcw
12:21 AM ZincBoy[CAON]066: I know it is an option on most of them but I think you would need to go beyond that
12:21 AM drdoc: Tom_L: I just put in an RMA request through the storefront
12:21 AM Tom_L: ok
12:21 AM Tom_L: he may be able to walk you thru a fix though
12:21 AM Tom_L: or tell you what's wrong
12:21 AM drdoc: it's dead. Not a flicker on the LEDs, and it pulls 5V down to a few mV
12:21 AM Thorhian7490[m]: I know Variaxis machines have it as a standard typically these days from Mazak.
12:22 AM Tom_L: https://www.f-zimmermann.com/en/gantry-machines
12:22 AM Tom_L: i dunno what models they have
12:23 AM drdoc: oh, hey
12:23 AM drdoc: there's some heavy machinery at auction in PA next month
12:24 AM ZincBoy[CAON]066: Damn. Those are cool. I would have to put my shop in it though rather than the other way around 🙂
12:24 AM XXCoder: man https://www.amazon.com/PepperTech-Digital-Raspberry-Computer-Complete/dp/B092TT72B2/
12:24 AM XXCoder: might be best way to get rpi4 lol
12:25 AM drdoc: https://hibid.com/lot/122665795/tormach-cnc-milling-machine?ref=lot-list
12:25 AM Thorhian7490[m]: Except it would have a very different PCB lol
12:25 AM drdoc: Tormach, looks pretty well "loved"
12:26 AM drdoc: https://hibid.com/lot/119764038/tormach-1100m-cnc-milling-machine?ref=lot-list
12:26 AM drdoc: and that one just showed up, it's in California
12:27 AM XXCoder: not bad if skilled on repair and maintance
12:27 AM drdoc: Also
12:29 AM ZincBoy[CAON]066: Any of the hobbyist level stuff tends to go for high prices at auction. Not bad if you are buying it for yourself but you won't get it for a song.
12:29 AM drdoc: I got gifted a couple of dentist's mills last week
12:30 AM drdoc: 5 axis, 16-tool changer
12:30 AM XXCoder: tiny workspace isnt it
12:30 AM drdoc: very
12:30 AM drdoc: and very limited in material capability
12:30 AM XXCoder: would be cool to make very tiny statues or something
12:30 AM drdoc: yep
12:30 AM ZincBoy[CAON]066: Are the tools available or manufacturer specific?
12:30 AM Thorhian7490[m]: Jewelry
12:31 AM drdoc: and, you know, get a handle on 5-axis design & production
12:32 AM ZincBoy[CAON]066: Are the controls open or locked to a specific system?
12:32 AM Tom_L: XXCoder, i thought that's what 3d printers were for
12:32 AM drdoc: ZincBoy[CAON]066: as far as I can tell it used standard dental mills and burrs
12:32 AM XXCoder: not that small, not that detailed
12:32 AM XXCoder: well unless you have expensive sla or even more expensive sls
12:33 AM drdoc: The software is DentalCAM/DentalCNC
12:33 AM drdoc: and the working end is licensed, but no charge
12:33 AM XXCoder: I wonder if theres "test material" thats like tooth for testing such a machine
12:33 AM drdoc: I don't know whether it speaks Gcode at all
12:34 AM drdoc: XXCoder: acrylic and ceramics
12:34 AM XXCoder: yeah
12:34 AM drdoc: So
12:34 AM Tom_L: well you guys keep burning the midnight oil.. i'm not
12:34 AM Tom_L: later
12:34 AM XXCoder: 10 pm oil
12:35 AM Thorhian7490[m]: Lol. Must be in PST.
12:35 AM drdoc: my friend's fiancee brought him a pickup-load of them from her lab
12:36 AM drdoc: he says one of each model are mine. Haven't seen them, no idea what condition they're in
12:37 AM drdoc: VHF CAM 5-S1 and a CAM5-S2
12:38 AM CaptHindsight[m]: some old people just go to bed early :)
12:39 AM drdoc: and some of us just don't really sleep at all
12:41 AM CaptHindsight[m]: https://www.vhf.de/en/products/dental/dental-milling-machines/
12:41 AM CaptHindsight[m]: nice
12:42 AM XXCoder: no price
12:42 AM XXCoder: it means its un affordabnle to me lol
12:42 AM CaptHindsight[m]: the bigger ones are ~$30k
12:43 AM CaptHindsight[m]: https://bimedis.com/a-item/cad-cam-milling-machines-vhf-cam-5-s1-1013291 some $60k
12:45 AM drdoc: "Shipping from Russia"?
12:45 AM drdoc: I don't think so
12:45 AM drdoc: but yeah, that's the one
12:47 AM CaptHindsight[m]: I make my own
12:48 AM drdoc: dentures?
12:48 AM drdoc: ;)
12:48 AM CaptHindsight[m]: you can always move to LCNC for the controllers if need be
12:58 AM drdoc: That's my hope
12:58 AM CaptHindsight[m]: mine are for inkjet and similar https://i.imgur.com/gLwOHAg.png
12:58 AM drdoc: VHF's basic software is available at no charge
12:58 AM drdoc: my only real concern running LCNC is the tool changer
01:02 AM CaptHindsight[m]: yeah
01:03 AM CaptHindsight[m]: LCNC can handle tool changers
01:03 AM CaptHindsight[m]: great big ones or tiny teeny ones
01:03 AM XXCoder: need to add to bot, remove ' and change it to other type
01:04 AM CaptHindsight[m]: just boycott UTF* users
01:05 AM CaptHindsight[m]: I don't really mind it
01:06 AM CaptHindsight[m]: XXCoder: are we still using that Chinese bot?
01:06 AM XXCoder: chinese bot?
01:07 AM CaptHindsight[m]: discount irc bot
01:08 AM CaptHindsight[m]: can't handle UTF8
01:08 AM CaptHindsight[m]: gets stuck from time to time
01:08 AM XXCoder: ah lol well turbosss one who manages bridge bots :)
01:08 AM XXCoder: i manage mee6 and rss feed bot
01:09 AM CaptHindsight[m]: neither are Chinese
01:09 AM CaptHindsight[m]: oh i just kid the Chinese, they aren't so bad
01:10 AM CaptHindsight[m]: except for the torturing, genocide, organ harvesting and similar
01:35 AM Deejay: moin
02:30 AM TurBoss: morning
02:31 AM xxcoder8265[m]: yo
02:31 AM TurBoss: o/
03:10 AM XXCoder: https://youtu.be/KPw6L7ds5tY
03:10 AM XXCoder: milling big old pipes
03:11 AM XXCoder: the tpoolchanger is bit of wtf
04:17 AM Tom_L: morning
04:59 AM travis_farmer853: G'Morning ☕
04:59 AM travis_farmer853: how come every time somebody not on the Discord end of the bridge uses an apostrophe, it shows up as ' (& a p o s ; stretched out so it doesn't convert)
04:59 AM travis_farmer853: makes it hard to read...
05:01 AM c101horse8332[m]: wait, is that where all the bots come from?
05:01 AM travis_farmer853: yes
05:01 AM c101horse8332[m]: aaaah ok, and whereabouts is this other side of the bridge?
05:02 AM travis_farmer853: IRC and Matrix servers
05:18 AM JT-Cave: morning
06:03 AM TurBoss: > <@_discord_731083529441640538:jauriarts.org> G'Morning ☕
06:03 AM TurBoss: > how come every time somebody not on the Discord end of the bridge uses an apostrophe, it shows up as &apos; (& a p o s ; stretched out so it doesn't convert)
06:03 AM TurBoss: > makes it hard to read...
06:03 AM TurBoss: hello, fix that is on my TODO list
07:01 AM JT-Cave: hi TurBoss
07:02 AM TurBoss: hello JT
07:14 AM Tom_L: TurBoss, did we ever figure out who can get discord on the -devel channel?
07:17 AM TurBoss: hello Tom_L i figured that the actuall matix devel room was created by the appservice bot when a matrix user tried to join #linuxcnc-devel:libera.chat
07:17 AM TurBoss: the only solution is to call support via email (support@matrix.org)but I don't know how to planteate the question yet, i think they don't allow doble bridge like we do here so we need an exeption
07:49 AM JT-Cave: I have a bunch of large flies in the machine shop and garage which are connected together and I have no clue where they came from
07:51 AM travis_farmer853: sounds like the start of the apocalypse 😱
08:38 AM drdoc: c101horse8332[m]: here:
08:38 AM drdoc: https://discord.gg/As6VqVXQ
08:39 AM c101horse8332[m]: yeah thats where im at
08:39 AM drdoc: ah
08:40 AM * drdoc wonders where his BoB is
08:42 AM drdoc: and my PCIe parallel card, for that matter
08:54 AM drdoc: pcw-home: Tom_L says I should ping you about my 7i96
09:02 AM JT-Shop2: yippie Robert Sorby sent me a whole pack of spares kit for the reversing jaws
09:05 AM pcw-home: drdoc: what is the issue?
09:10 AM Doc4133[m]: it worked Thursday, cut some PCBs, and then when I powered up the machine last night the 7i96 never came up
09:10 AM Doc4133[m]: no lights, no nothing, no smoke
09:11 AM Doc4133[m]: The power supply is fine; an Advantech PS-50A
09:13 AM drdoc: ack, sorry
09:14 AM drdoc: anyway, I can't figure why it stopped. There was no "event"
09:15 AM pcw-home: Usually a dead short means tha the 5V supply was high and the overvoltage Zener (CR44) has been fried/shorted
09:16 AM drdoc: the PSU is dead steady at 5.05V
09:16 AM ZincBoy[CAON]066: Is the board enclosed and well sealed from the workspace? You mentioned last night that you were seeing the supply drop to mV level when connected. I.E. dead shorted. It is unusual for boards like that to fail dead short. Copper dust is a PITA from my experience.
09:17 AM drdoc: ZincBoy[CAON]066: yes.
09:18 AM drdoc: CR44 is a dead short
09:23 AM drdoc: ZincBoy[CAON]066: it lives in a filtered enclosure
09:25 AM ZincBoy[CAON]066: That is good. I had issues with a system a while ago that was pulling unfiltered air across a board next to a PCB mill.
09:27 AM pcw-home: Worst case (lowest) Zener voltage is 5.32 (at a 66 mA test current) to damage the zener you would need about 5.5V
09:28 AM drdoc: I don't know how that would happen
09:29 AM drdoc: My experience with Advantech has been on par with or better than Meanwell
09:29 AM pcw-home: this can also happen with external shorts ( 7I96 5V step/dir or encoder pins shorted to a higher voltage )
09:32 AM drdoc: OK
09:32 AM pcw-home: Usually the zener will protect other parts (The ACT parts the drive the step/Dir and outputs will die at about 6.5V)
09:33 AM CloudEvil: As a general point, 1K resistors on all inputs and outputs you don't need high speed or low impedence fixes a hell of a lot of 'oh no, that was 36V' issues.
09:33 AM ZincBoy[CAON]066: Failures like this are 99% due to EOS or ESD. The worked for 20-30 hours and then failed is a classic ESD signature. Zeners would tend to be less sensitive to ESD as they are used for ESD protection. Something else may have failed due to ESD and be shorting the supply rail. Would not be able to tell for sure without decapping and electron microscope work though.
09:36 AM drdoc: All the wiring is shielded except for the limit switch circuits
09:36 AM drdoc: and any ESD on that would be *painfully* obvious
09:38 AM drdoc: ZincBoy[CAON]066: do you service these boards?
09:38 AM ZincBoy[CAON]066: No that would be EMI. ESD (electrostatic discharge) is what you get when you touch a pin on the board without draining the charge (grounding) you and the board. This can cause damage that is not immediately obvious.
09:39 AM drdoc: I do know the difference
09:39 AM drdoc: my comment stands
09:40 AM drdoc: I spent some money and some time setting up this machine to be stable and not prone to the "99%" problems
09:40 AM ZincBoy[CAON]066: No, but I work for a semiconductor manufacturer and am involved in failure analysis of IC products.
09:40 AM drdoc: then I'd really like to hear from pcw-home
09:40 AM drdoc: no offense
09:42 AM pcw-home: My guess (If CR44 is truly shorted) is that something caused a surge in the 5V line
09:43 AM pcw-home: That's about the only thing that can damage CR44
09:43 AM drdoc: Well, my DMM says CR44 is a 0-ohm resistor
09:44 AM pcw-home: well CR44 is across the 5V supply so it could be something else (but usually CR44 is the canary in the mine)
09:44 AM drdoc: right
09:45 AM drdoc: I understand Zener protection
09:45 AM drdoc: so I suppose the question is "what do I do now?"
09:47 AM pcw-home: well you could remove CR44 (or replace it) unfortunately even lowly Zener diodes are hard come by now
09:47 AM drdoc: I might have one in the box
09:48 AM drdoc: I take it the warranty's void, then?
09:48 AM pcw-home: If you have a through hole Zener, you could solder it to the back of the board
09:49 AM drdoc: I have some SMD parts, I just don't remember what the threshold voltages are
09:50 AM pcw-home: The original part is a SMBJ5919B (5.6V 5%)
09:51 AM drdoc: ok, I'll look
09:51 AM drdoc: no warranty?
09:52 AM drdoc: I mean I'm fine with replacing that part, if I have or can get one
09:53 AM drdoc: but the board's only a year old, and if the warranty is still good I don't want to void it with a solder sucker
10:05 AM Tom_L: drdoc, ever hear of an open box warranty?
10:05 AM Tom_L: :)
10:06 AM Tom_L: anyway it sounds like you may be getting to the bottom of it
10:11 AM drdoc: yeah, but a straight answer would be nice. "Yes, part swapping will void your warranty" or "What warranty" or "What's the serial #; I'll make a note that it was done under advisement"
10:16 AM pcw-home: There's a 2 year warranty and we can fix the board if only the Zener is damaged, but if there's more wide spread damage we would take the shorted Zener as evidence of an overvoltage
10:17 AM drdoc: OK
10:17 AM pcw-home: Still likely repairable but not under warranty
10:18 AM drdoc: I can pull the Zener and test it out-of-system, see if at least it's talking to HAL
10:18 AM drdoc: or just send it in
10:18 AM drdoc: I put in an RMA request last night on my mesanet account
10:20 AM _unreal_: very sad, my daughter is at her POS mothers for summer, yet again.
11:16 AM _unreal_: figures I ordered an MGN7 rail. and got mgn12 :( from amazon. to much trouble to return I'll use it i'm sure anyways. just ordered from ebay this time :/ MGN7
11:19 AM Rab: _unreal_, why not just use the 12mm rail?
11:19 AM _unreal_: roycroft, I'm using an MGN7 rail setup to run the dust shoe setup. it will be hidden behind the main XZ carriage frame. So when I need the dust shoe I can slide it up or down lock it in place. and I'm also designing the drive system for it. I'm torn between making it belt drive or thread. I'm leaning belt drive.
11:19 AM _unreal_: Rab, I'd rather but its too tall
11:21 AM _unreal_: I could add standoffs to the carriages on the x rails but I really dont want to push the spindle further
11:22 AM _unreal_: from Y bearings center
11:26 AM Rab: I get it now. No point in using heavier rail for the dust shoe.
11:26 AM _unreal_: I'm going to setup two brush systems. One will the system that I can set the height independent of the Z. and the other will be a clamp on, I can clamp onto the bottom of the spindle where it steps down in DIAM.
11:26 AM _unreal_: ya
11:27 AM _unreal_: my goal is to have a brush shoe that I can control with a stepper or move a pin and have it follow the Z meaning direct link
11:29 AM _unreal_: going to use a simple DIY slide bolt setup. slide one way links to the z, the other way links to the independent brush shoe motor. I'm trying to design it to NOT cause me brain pains and crash's
11:29 AM _unreal_: if I dont go with the second stepper. I'll just add a pole that I can put a knob on and hand tighten it to a set height
11:33 AM _unreal_: this new bigger cnc does have a wood base but its all epoxy coated.
11:37 AM _unreal_: My hope is to get a nice 1/4" aluminum plate in the future, drill/tap it and then make a working tray that has a drain system. That would be a setup that would allow me to use coolant with a plastic window shoe rather then brush to contain water/oil spray.
11:48 AM unterhaus: why does anything in lcnc depend on a buggy nvidia driver?
11:49 AM _unreal_: Rab, you got me thinking. I just dbl checked something and noted I was taking a measurment off of the wrong thing. I do need to add blocks on the carriages for the X axis regardless. I only have 6mm between the back of the XZ carriage frame and the X rails :S
11:49 AM _unreal_: not good
11:50 AM unterhaus: debian testing sent an email to the developers list that mesaflash and lcnc are being autoremoved for being dependent on the nvidia driver
11:51 AM _unreal_: rab I was including the rail of the X in my measurements :S damn it. oh well. no big deal just annoying to discover the error. at least I have not moved the main xz carriage plate from my cnc yet. still got holes to put into it and to cut off the top/bottom
11:53 AM pcw-home: unterhaus: That's pretty funny considering neither are dependent any specific video hardware
11:53 AM pcw-home: on any
11:54 AM roguish[m]: unterhaus: I haven't used nvidia with linuxcnc for 10 years.......
11:56 AM unterhaus: isn't mesaflash fully text based?
11:57 AM unterhaus: I'm wondering if it isn't an opengl dependency
11:58 AM unterhaus: I'm also wondering if every package in the world got these messages
12:02 PM unterhaus: I followed the bug they gave and lots of people are complaining about it
12:02 PM _unreal_: sounds like some dumbass in the world is just trying to make life harder
12:03 PM unterhaus: one of the guys developed a spell checker with no display access at all
12:05 PM unterhaus: I'm very confused by the bug report, but apparently the bug was introduced into the autoremove script https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011146
12:10 PM roguish[m]: pcw-home: Peter. i'm having a heck of a time tuning my mill. need some insight, please
12:17 PM _unreal_: so this 1u video/keyboard blade is in working condition. but one of the rails is TOTALLLY fucked up.
12:17 PM pcw-home: what hardware?
12:17 PM _unreal_: I'm only guessing but I bet some moron didnt know how to release the lock the keeps it from sliding back in. forced it and fucked up the rail.
12:18 PM _unreal_: hence it got tossed
12:18 PM _unreal_: just mind blowing. its a simple part thats available for cheap.
12:18 PM _unreal_: and yet this 1u thing is worth $1400 new
12:18 PM pcw-home: unterhaus: yes, mesaflash is a command line utility so removing it because its dependent on a NVidia driver is especially bizzare
12:40 PM drdoc: OpenGL deps are a morass of cya
12:44 PM drdoc: There's a good chance that one of the python packages in the lcnc dependencies has a gui option or alternative and the maintainers hasn't trimmed the clic version's dependency list
12:45 PM drdoc: or one of the OpenGL library packages
12:46 PM drdoc: NVidia is binary only, and Debian still has a heavy case of RMSitis
01:11 PM pcw-home: Yeah but mesaflash doesn't use python
01:17 PM jepler1088[m]: I am also trying to understand why nvidia is a dependency of either; even linuxcnc should only depend on an OpenGL implementation being present, not some specific one
01:22 PM drdoc: pcw-home: is lcnc a mesaflash dependency?
01:22 PM jepler1088[m]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011268
01:22 PM jepler1088[m]: apparently this has affected a large number of packages and is maybe spurious; I'm reading through the bug now
01:28 PM XXCoder: just read recent pushes in rss feeder, interesting. adding inhibit task mode set when jogging
01:28 PM XXCoder: wonder what happened that made someone fix that bug (and found)
01:48 PM XXCoder: lol guy gets super cheap cnc router https://youtu.be/1EpmJ0IKxGA
01:56 PM pcw-home: drdoc: no
02:04 PM Rab: pcw-home, is there a way to order a 6i25 with both the standard and low-profile PCIe mounting brackets?
02:17 PM _unreal_: I am really torn on if it is worth the effort to motorize the z brush sled or not. or just set it up so it can be locked at a set height. or link to the z axis
02:23 PM unterhaus: "cute" wasn't in my list of things that I wanted in a cnc
02:24 PM unterhaus: I wonder how much it would cost to make that little thing using cutcutsend
02:24 PM travis_farmer853: yeah, i bought my machine cause it was "cute" 😉
02:26 PM CloudEvil: I was wondering yesterday about a plotter, with a circular guide you press against an object (at a variable angle) and it tracks position and scribbles something on it with a fast pen.
02:37 PM unterhaus: I have a batch of slides I got from a chip making machine. Now that would be cute
02:39 PM Rab: pcw-home, also, my target would be Parker Gemini GV servo drives via +/-10V analog. Based on Parker's input schematic I believe I should use e.g. the 7i77 and not the 7i77D, does that seem correct? http://reboots.g-cipher.net/gemini_gv_analog.png
02:49 PM pcw-home: Rab: you can order a additional bracket (or just ask, we can include it in the shipment)
02:50 PM pcw-home: The choice of 7I77/7I77D depends on external relay wiring mostly (well and whats available)
02:52 PM unterhaus: I'm pretty sure you could get that parker drive working with either
02:53 PM unterhaus: I have some reliance drives that annoyingly have the lower half of the differential analog input tied to power ground
03:07 PM snakedGT is now known as snaked
04:25 PM CaptHindsight[m]: Rab: I have had a bunch of those Parker Gemini GV servo drives via +/-10V analog
04:25 PM CaptHindsight[m]: I think that I have one left
04:29 PM CaptHindsight[m]: generally used with 7i77's
05:58 PM _unreal_: The more I think about it. I think what I'm going to do. is just use a few pullys and wire and a compression disk with a hand turn knob. That would allow me to just set it to the height I need. Or just release the tension and connect it to the z its self
06:15 PM * roycroft is still sanding, but is almost done
06:15 PM roycroft: until it's time to sand again :)
06:20 PM CaptHindsight[m]: a robot that can wet sand would be handy
06:21 PM CaptHindsight[m]: https://www.youtube.com/watch?v=G-LKAjIOdis
06:31 PM roycroft: wet sanding would be very bad in my current situation
06:32 PM roycroft: i might be able to use my drum sander for this operation, but it would take longer than using hand sanders
06:33 PM roycroft: i am sanding the edges of my drawer parts
06:40 PM CaptHindsight[m]: wet sanding for auto bodies not woodwork
06:40 PM CaptHindsight[m]: an area that hasn't really been automated yet
06:41 PM CaptHindsight[m]: but auto makers just apply clear coats as best they can and ignore the final wet sand and polish steps
06:42 PM CaptHindsight[m]: outside of Porsche, BMW and exotic cars I think VW actually does some finish work after clearcoat
06:43 PM CaptHindsight[m]: they don't even polish Corvettes at the factory
07:01 PM _unreal_: it would be nice to fully motorize the dust shoe axis. The main issue I'm looking at is the gcode. It would be really nice to have a "max depth" setup to stop the depth of the dust shoe at the current tooled height or average depth of the tooled material.
07:02 PM _unreal_: I tend to doubt there is much of development out there to support such a thing.
07:03 PM _unreal_: well I'll be back later. going to go to the store and buy some beer
07:04 PM _unreal_: been out for like two weeks
07:04 PM _unreal_: tired of hard stuff
07:27 PM CaptHindsight[m]: dust shoes would be relatively easy
07:28 PM Tom_L: M code
07:28 PM Tom_L: but he doesn't use lcnc
07:29 PM CaptHindsight[m]: a dust shoe that just keeps itself a given distance away from the surface beneath could be done with an ultrasonic sensor
07:29 PM CaptHindsight[m]: cheap and easy
07:29 PM Tom_L: yeah
07:29 PM Tom_L: unless dust got on the lens
07:30 PM CaptHindsight[m]: and dust won't effect it much unless it builds up pretty deep on the transducer
07:30 PM Tom_L: nevermind, i'm thinking IR
07:31 PM CaptHindsight[m]: https://www.adafruit.com/product/3942
07:31 PM Tom_L: it couldn't predict elevation change across the whole dust cover though
07:31 PM Tom_L: yes i have some of those as well as the sharp IR
07:32 PM CaptHindsight[m]: if you had one on each corner it could produce a terrain map as it moves
07:32 PM Tom_L: i used the polaroid ones too
07:32 PM Tom_L: good for ~25ish ft
07:33 PM CaptHindsight[m]: or some predetermined scan pattern it could be done with one sensor
07:33 PM Tom_L: wonder if the cutter noise would interfere with the sensor
07:33 PM Tom_L: it is listening after all
07:33 PM CaptHindsight[m]: ping
07:33 PM Tom_L: pong
07:34 PM Tom_L: the polaroid put out a multi frequency tone
07:34 PM Tom_L: not sure about those SR04 ones
07:34 PM CaptHindsight[m]: cutters are pretty wideband noise until it finds some resonant spot
07:34 PM CaptHindsight[m]: ping
07:36 PM CaptHindsight[m]: https://www.youtube.com/watch?v=jr0JaXfKj68
08:22 PM roycroft: i think i should not be doing anything to encourage heavy drinking on my part, as i'm getting older and heaving drinking is not a healthy activity in which i should engage, so i'm going to propose a reverse drinking game
08:22 PM roycroft: i'll drink a shot for every youtube woodworking video that does NOT involve a resin pour
08:45 PM roycroft: we're having a thunderstorm right now
08:45 PM roycroft: how rare
08:46 PM XXCoder: nice
08:46 PM XXCoder: here its just rain
08:59 PM roycroft: now the sun is shining
09:00 PM XXCoder: its just to remind what sun looks like before far more storms lol
10:03 PM roycroft: i just started cutting the box joints for my drawer sides, and decided to do a test fit after the first batch of fronts and sides were done
10:04 PM roycroft: i did discover a big screwup, which i expected that i would find, because i'm good at screwing things up a bit
10:04 PM roycroft: but turned out well - somehow my saw fence moved about 0.100" in between ripping the sides and ripping the fronts/backs
10:05 PM roycroft: fortunately, it moved away from the blade
10:05 PM roycroft: so now my fronts and backs are ~0.100" too tall
10:05 PM roycroft: i can fix that :)
10:05 PM roycroft: if it moved the other way i'd be screwed
10:07 PM roycroft: and the sample drawer fits the cabinet perfectly
10:21 PM XXCoder: whew
10:22 PM XXCoder: can do 2 cuts. cant grow wood out lol
10:29 PM roycroft: yes
10:29 PM roycroft: i have no idea how that happened, but somehow it did
10:29 PM roycroft: and actually, under some circumstances, it is possible to make a piece of wood longer
10:30 PM roycroft: but that would not ever work with plywood
10:30 PM roycroft: and it would not work in my situation regardless of the material
10:30 PM XXCoder: can always add groove to too short wood and togue to add on
10:32 PM roycroft: i bought a couple new, very expensive solid carbide spiral router cutters today, and i'm so glad i did
10:32 PM roycroft: i'm getting really clean cuts in the plywood
10:32 PM CloudEvil: :)
10:32 PM CloudEvil: I got some cheap up/downcut spiral bits.
10:32 PM CloudEvil: They're neat
10:32 PM CloudEvil: They cut in from both sides of the wood at the same time
10:33 PM roycroft: yeah, i'm familiar with those
10:33 PM roycroft: they would not be appropriate in this application
10:33 PM roycroft: i got upcut cutters
10:34 PM roycroft: i'm cutting box joints, and the parts are held vertically
10:34 PM roycroft: i'll take a picture of the setup tomorrow