#linuxcnc Logs

Aug 12 2021

#linuxcnc Calendar

01:25 AM Deejay: moin
04:20 AM Tom_L: morning
04:24 AM XXCoder: yo
05:37 AM JT-Cave: mornng
05:48 AM randy: hello.
05:59 AM cheater: hi everyone
06:00 AM cheater: i have an EMCO concept mill 105. it comes with this shitty buggy software called Siemens Win NC. What's the best way towards having the cnc mill stuff from like solid works or some other commonly used cnc software? (I don't know what people use). note that i'm stuck on windows for this.
06:10 AM cheater: (it's at a university... and... yeah)
07:40 AM JT-Cave: notepad ++
07:51 AM perry_j1987: morning
09:28 AM Rhine_Labs: Morning.
10:03 AM * PavelTretiakov[m uploaded a video: (4175KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/oyaZdjSHFRfaWFgZmEfTVpNJ/VID_20210812_172329.mp4 >
10:03 AM PavelTretiakov[m: Hello! Can you give me tip how i can fix resonans with velosity 11.3 - 11.44 mm/min
10:04 AM PavelTretiakov[m: I have resonans with velosity 11 or 17 or 34 mm/min
10:06 AM MrHindsight[m]: Pavel Tretiakov: saw the backlog, does the screw bind at all if you turn it by hand with the motor not attached?
10:07 AM MrHindsight[m]: if your stepper drive is tunable you have to follow whatever steps required to do so
10:07 AM MrHindsight[m]: if it is some mysterious drive from China then you might just have to replace it with a better drive
10:08 AM CloudEvil: Also, sometimes adding mass can help resonance.
10:08 AM MrHindsight[m]: maybe try a great big filter capacitor on the power supply pins for the drive
10:12 AM MrHindsight[m]: how well laid out is your wiring? Use start grounding
10:13 AM MrHindsight[m]: https://www.youtube.com/watch?v=cFrREKB-l4M
10:15 AM MrHindsight[m]: place your hand on the carriage and push against the direction of travel and see if the oscillations stop
10:16 AM MrHindsight[m]: might be difficult with a high ratio screw, worth a try
10:17 AM PavelTretiakov[m: <MrHindsight[m]> "if it is some mysterious drive f" <- Yes! It is 2dm542 from China! Can you recomendate stepper motor brend? Leadshine is good?
10:18 AM MrHindsight[m]: IF it is a genuine Leadshine, lots of poor copies
10:19 AM Rhine_Labs: Genuine Leadshine is good..
10:21 AM PavelTretiakov[m: How i can buy genuine Leadshine?
10:23 AM Rhine_Labs: What country you in?
10:24 AM Rhine_Labs: http://www.leadshine.com/
10:24 AM PavelTretiakov[m: Rhine_Labs: From Russia
10:25 AM Rhine_Labs: They may have a ru distro.
10:27 AM pcw_home: Sometime using a higher micro-step ratio helps with resonance
10:30 AM PavelTretiakov[m: now i use micro-step 1/8 also i have used 1/16 it is not helped me.
10:31 AM PavelTretiakov[m: <Rhine_Labs> "They may have a ru distro...." <- Thank you! I found Ru disro!
10:35 AM PavelTretiakov[m: Thank guys for your tips! It is really helpfull!
11:13 AM mrec_ is now known as mrec
11:26 AM Quasar66: Hello. I'm trying to install the latest linuxcnc version on an Asrock Q1900B-ITX but after selecting any option (live system, install, etc) i get a black screen and it gets stuck there. Anything i can do to debug or fix this ?
11:26 AM Quasar66: I have written the iso image to 2 different usb drives with both balena etcher and win32diskimager
11:27 AM Quasar66: I've also tried changing CMS settings in bios, resetting bios to default and toggled all i could think of in bios
12:12 PM Tom_L: Quasar66, what os version?
12:12 PM Tom_L: i'm running wheezy on that same board with the latest linuxcnc version
12:13 PM Tom_L: i'm not sure buster would run on that very well
12:13 PM MrHindsight[m]: what is your approach to machining new castings? How do you work with reference marks?
12:13 PM Tom_L: if you want to run buster you may need to update the hardware
12:14 PM MrHindsight[m]: https://www.practicalmachinist.com/vb/cnc-machining/how-accurately-consistently-machine-die-cast-component-366116/
12:14 PM Tom_L: screw mounts on tabs somewhere on the casting for an 'average' level or some feature on the casting
12:15 PM Tom_L: establish one good plane and work from that
12:17 PM Tom_L: every one will be a little different
12:17 PM MrHindsight[m]: which plane do you pick?
12:17 PM MrHindsight[m]: largest?
12:17 PM Tom_L: it varies depending on critical features
12:18 PM Tom_L: try to get them 'centered' where they need to be
12:18 PM MrHindsight[m]: how to make it easy for a cylinder head? say V6 or V8
12:18 PM Tom_L: sry i've never made one :)
12:18 PM MrHindsight[m]: wonder how the engine casters end up doing it
12:18 PM Tom_L: you would likely go off the gasket surfaces
12:19 PM MrHindsight[m]: sure on flat face
12:20 PM MrHindsight[m]: but if you pick the combustion chamber face and it's off by a degree then valve guides and chamber size will change
12:21 PM Tom_L: https://www.youtube.com/watch?v=l9fO40J73qQ
12:21 PM Tom_L: obviously didn't watch it all but starts from hot metal to finished head
12:22 PM MrHindsight[m]: https://youtu.be/l9fO40J73qQ?t=102
12:22 PM Tom_L: i would suppose the surface that mates with the block would become the reference
12:27 PM MrHindsight[m]: reference bosses on that face could accurate to the diameter of the grains of sand used
12:28 PM MrHindsight[m]: which would also be the raw surface texture of the combustion chambers
12:28 PM Tom_L: very likely
12:32 PM Tom_L: i haven't paid much attention but i bet if you look at just about any head you will find some sort of reference tab on the outside
12:36 PM MrHindsight[m]: always good to consider how someone has mass produced something wrong for many years
12:59 PM Quasar66: @TOM
12:59 PM Quasar66: @tom_
01:00 PM Quasar66: @tom_l i was trying to install debian 10 buster / linux cnc 2.8.2
01:00 PM Quasar66: i now tried debian 7 wheezy / linuxcnc 2.8.0 (second download link on http://linuxcnc.org/downloads/ )
01:00 PM Quasar66: wheezy worked
01:01 PM Quasar66: i'm trying to figure out if i need to upgrade or not
01:01 PM Quasar66: this will be my first linuxcnc install so i'm not sure if there's a feature difference between the two
01:02 PM Quasar66: I'm running latency test and it's 7672 / 9062 right now, also trying to find out hwo to intepret the values, if they are good enough or not
01:30 PM pcw_home: That's quite good
01:33 PM MrHindsight[m]: https://www.uark.edu/ hey this actually is a thing
01:35 PM MrHindsight[m]: Quasar66: newer versions of LCNC have newer and more features
01:35 PM MrHindsight[m]: newer distos have newer kernels
01:36 PM MrHindsight[m]: newer versions of LCNC tend to get packaged and released along with newer distros and kernels
01:37 PM MrHindsight[m]: but you can mix and match a bit, but you get into issues with things like Python or graphics not being supported with new code not working with older versions of things
02:11 PM perry_j1987: hows it going
02:12 PM perry_j1987: going to chuck up these er16 straight shank holders i got and bore out some holes so i can get the tools in a bit closer
02:13 PM perry_j1987: got a plan set now in CAD for the gang tool holders
02:26 PM Tom_L: Quasar66, point the repo to 2.8 and it will update thru synaptic package manager
02:27 PM Tom_L: if the board works with wheezy i see no reason to update
02:28 PM Tom_L: http://buildbot.linuxcnc.org/
02:28 PM Tom_L: shows the repo locations
02:28 PM Tom_L: you would be looking for wheezy arc i386 with RTAI
02:29 PM Tom_L: unless you are using an ethernet mesa card
02:30 PM Tom_L: those require preempt-rt which will give you worse latency on that board
02:53 PM perry_j1987: hmm was going to machine a channel in for locating
02:54 PM perry_j1987: but if i use dowel pins then it wont mess up the surface for mounting a quick change tool post as well
02:54 PM perry_j1987: if i want to swap between the two
02:57 PM perry_j1987: ah wait i got other idea
02:57 PM perry_j1987: *off to CAD
02:57 PM perry_j1987: heh
03:04 PM MrHindsight[m]: anyone have a favorite laser scanner or structured light unit they are happy with?
03:09 PM Quasar66: @tom_l if it have -rtai- do i need the -rt wheezy source?
03:11 PM Quasar66: i was looking for a -rtai- one
03:16 PM perry_j1987: you use that pickup line at the Bar MrHindsight[m] haha
03:19 PM Quasar66: had to run apt-get install linuxcnc linuxcnc-dev instead of upgrade but it worked
03:19 PM Quasar66: thank you
03:19 PM Tom_L: wheezy is rtai
03:20 PM Tom_L: well i guess they do have a preempt-rt build for it too
03:21 PM Quasar66: sorry for the many questions, its a lot to take in at once and wanted to make sure i don't do something stupid
03:36 PM * JT-Shop waited far too long to check the chip bag... full past the top by 2'
03:37 PM Tom_L: meh, get a bigger bag
03:51 PM perry_j1987: now i want tortilla chips and salsa lol
03:59 PM JT-Shop: filled up 6 feed sacks with chips...
04:04 PM perry_j1987: https://www.youtube.com/watch?v=26vCEWVNFYI
04:14 PM MrHindsight[m]: In Soviet Russian laser scan you!
04:23 PM Rhine_Labs: Quasar66 you have an Nvidia Card?
04:23 PM Rhine_Labs: Common issue with Nvidia drivers.
04:25 PM Roguish: Nvidia problems are usually easy to resolve. most important is keep it simple. it's a machine controller, not a freaking gaming box.
04:26 PM Rhine_Labs: Yep, same thing i tell people
04:27 PM Rhine_Labs: Even if he fixes Nvidia issue generally when linux updates will happen again.
04:28 PM Rhine_Labs: I have up on NVidia Cards.
04:28 PM Rhine_Labs: I have one in the ship PC but use Onboard when i need Linuc
04:28 PM Roguish: be careful with updates. only when necessary. if it works, don't mess with it....
04:29 PM Rhine_Labs: Yep.
04:29 PM Rhine_Labs: Killed so many arch installs
04:40 PM -!- #linuxcnc mode set to +v by ChanServ
05:33 PM Tom_L: JT-Shop, all those chips, you should have some drawer handles to show for it!
05:57 PM JT-Shop: lol the chips were from jointing and planing wood to find the drawer pulls... I have two profiled out
05:58 PM JT-Shop: I cheated and used the BP knee mill to cut the profile
06:06 PM Tom_L: that's not cheating, just good use of equipment !
06:07 PM Tom_L: although i'm not that fond of cleaning wood out of my mill
06:46 PM _unreal_: WOW I got my first ETSY sale
06:46 PM _unreal_: someone purchased my air assist wand holder for 3d printing
06:56 PM CloudEvil: yay
09:24 PM snakedLX is now known as snaked
11:21 PM -!- #linuxcnc mode set to +v by ChanServ
11:21 PM -!- #linuxcnc mode set to +v by ChanServ