#linuxcnc Logs

Jun 21 2021

#linuxcnc Calendar

12:25 AM veegee: Oh... 1mm range - perfect
01:32 AM Deejay: moin
02:03 AM randy: morning
04:01 AM Tom_L: morning
04:04 AM Tom_L: rain, Hi 76F
05:09 AM JT-Cave: morning
05:10 AM XXCoder: ultraearly morning
05:15 AM tiwake[m]: Stupid early
05:17 AM sensille: lunchtime even
05:18 AM XXCoder: its why its always breakfast time
05:31 AM Deejay: lunch time :)
05:31 AM XXCoder: yep lunch time too
06:16 AM tiwake[m]: The broaching is good
06:20 AM tiwake[m]: Time to make two more
06:20 AM XXCoder: wesome
06:21 AM tiwake[m]: 26 tooth spline, in a blind hole on both ends
06:21 AM XXCoder: it has angle of broach tols?
06:21 AM XXCoder: i hate those
06:22 AM XXCoder: i worked one that had one degree tol
06:22 AM XXCoder: it sucked
06:22 AM tiwake[m]: ..?
06:22 AM XXCoder: angle of broach tool rotation
06:23 AM tiwake[m]: Whatever 360/26 is
06:23 AM XXCoder: 13.85 degree
06:23 AM tiwake[m]: I made a macro to do all of it automatically
06:24 AM XXCoder: its because part has a key slot on broach
06:24 AM XXCoder: if it is not aligned enough, you cant put on part.
06:26 AM tiwake[m]: Position tool where you want to start, how many teeth, and the diameter and length... away it goes
06:26 AM XXCoder: thats the case for very large percent of broach
06:27 AM XXCoder: one i menioned, its very rare one that has specific angle. fixtures has posts i can move up and down to get in that 1% angle
06:27 AM XXCoder: expensive tool which is fun too lol
06:31 AM tiwake[m]: Heh, yeah
08:52 AM JT-Shop: now that bitch is trying to say the item was not as described after receiving it
08:53 AM Tom_L: some just try to get something for nuthin and will go to any extent to get it
08:55 AM JT-Shop: she only filed for $66 not the whole amount...
08:55 AM Tom_L: what board did she mis order?
08:55 AM Tom_L: i bet that's what happened
08:55 AM Tom_L: she realized she didn't need one after clicking
08:59 AM JT-Shop: she is trying to get a refund on postage
08:59 AM Tom_L: ahh
08:59 AM Tom_L: well that's not on you and i'd think they would take covid into account
09:08 AM JT-Shop: I only have one chance to reply so I'll think it over very good before doing so
09:09 AM Tom_L: yeah
09:18 AM JT-Shop: the reason for her claim is defective or broken LOL
09:22 AM Tom_L: well the post is broken!
09:25 AM JT-Shop: she didn't even type in one word of why
09:27 AM Tom_L: was the postage $66 ?
09:27 AM JT-Shop: yes
09:27 AM JT-Shop: $66.40
09:27 AM Tom_L: i'd explain that and the fact that nothing left the US for a long time
09:27 AM JT-Shop: which is what her claim is now
09:28 AM Tom_L: and the fact that shipping is out of your hands
09:28 AM JT-Shop: and the fact that usps priority international is not a guaranteed deliver time
09:28 AM JT-Shop: and that too
09:29 AM Tom_L: you might actually win this one :)
09:29 AM * JT-Shop better get the trash out before it starts to rain
09:29 AM Tom_L: just stopped here for a bit
09:29 AM JT-Shop: I hope so, I'm tired of that bitch
09:30 AM Tom_L: shall i tell her you hang out on irc and if help is needed setting anything at all up please contact....
09:31 AM Tom_L: this template doesn't like any blank spaces
09:32 AM Tom_L: took a sec to find the one culprit
09:37 AM JT-Shop: damn github is now requiring you to use personal access tokens to push or pull :(
09:39 AM Tom_L: on your own stuff or linuxcnc?
09:39 AM Tom_L: that's just MS gettin in your buisness
09:59 AM JT-Shop: for everyone
10:01 AM JT-Shop: just got a sprinkle and the temp dropped a few degrees
10:01 AM Tom_L: i opened the garage doors a bit ago to cool it down
10:01 AM Tom_L: may wander out there in a bit
10:37 AM roycroft: it
10:38 AM roycroft: is already 21 degrees her
10:38 AM roycroft: today is going to be a real scorcher
10:41 AM * JT-Shop still has 4 packages in transit :(
10:42 AM * JT-Shop goes back to his project
12:13 PM Tom_L: ok, trued up a few blocks, just waiting for a cutter
01:15 PM JT-Shop: 68F and light rain
01:40 PM Tom_L: 64F and no rain
01:40 PM Tom_L: update
01:40 PM Tom_L: 75F and no rain
01:48 PM * JT-Shop took a warped piece of plywood and some worm hole knotty red oak and made a flat shelf for the roll around cart
01:59 PM roycroft: it's 29 here already, and i'm doing my yard work
01:59 PM roycroft: i'm almost done for the day though - my plan is to do a little bit every morning, before it gets too hot
04:12 PM mrec: is anyone using nema17 motors? my motor is giving a high noise when it's not moving
04:12 PM mrec: I'm also using a nema23 stepper which seems to be fine, also the temperature is okay just warm
04:13 PM Tom_L: step timing is off?
04:13 PM Tom_L: lotsa glue printers use nema17 i think?
04:15 PM mrec: I'm using one of those servo42b nema17 motors it's like whisteling stepping shouldn't come into play because it's not moving.
04:15 PM mrec: the normal moving noise is okay .. nothing wrong with that
04:15 PM Tom_L: no but it's holding, right?
04:15 PM mrec: yes
04:15 PM Tom_L: highest current draw is when it's holding
04:16 PM Tom_L: using microstepoing on it?
04:19 PM Tom_L: mrec, https://forum.arduino.cc/t/whistling-when-stepper-motor-stops/532756/3
04:19 PM mrec: https://github.com/makerbase-mks/MKS-SERVO42B/issues/8#issuecomment-703309822
04:19 PM mrec: that guy also found something I'll try that the next days
04:20 PM mrec: I should be able to limit the current to the absolute minimum when the motor isn't doing anything no need for holding torque
04:21 PM mrec: https://i.snipboard.io/G1mAWp.jpg <- the tailstock motor is the annoying guy
04:21 PM mrec: it works well but the noise should go away
04:21 PM Tom_L: what size belt is that?
04:22 PM mrec: something between MXL 110 - 120 I think
04:22 PM mrec: I just picked what I had in a box
04:22 PM Tom_L: no room for that on the back side?
04:22 PM mrec: not really
04:23 PM mrec: if I'd deploy the motor there the tailstock lock would be blocked
04:23 PM Tom_L: face it the same way as the feed screw stepper
04:24 PM Tom_L: you don't need that stinkin handle! it's a cnc :)
04:24 PM mrec: nah I need to lock it to the slide otherwise the tailstock will move
04:25 PM Tom_L: not the lock, the manual feed handle
04:25 PM mrec: this is just for decoration :-)
04:25 PM Tom_L: and btw, wtf is the chuck handle doing in the chuck!!
04:26 PM mrec: waiting to fly away :-)
04:26 PM mrec: it never happened with that machine though. the enable button is too close
04:26 PM roycroft: you have had your warning
04:26 PM mrec: there's also some protective cover which is normally installed
04:26 PM Tom_L: are you gonna machine a mount for it like you did the cross feed?
04:27 PM roycroft: when i took machining classes, students were given one warning
04:27 PM mrec: I know! I had that experience already with another (mini) lathe
04:27 PM roycroft: if they left the key in the chuck a second time they were expelled from the class
04:27 PM mrec: for a valid reason
04:28 PM Tom_L: also...... belt guards
04:28 PM mrec: I have one but not installed yet due too much playing around with it
04:28 PM mrec: but I think the crossslide should be fine as it is
04:28 PM mrec: I did a lot work with it already.
04:29 PM mrec: I want to eliminate that high pitch tone from the tailstock motor before going on with it
04:30 PM mrec: the stock is not fixed properly either yet, it still needs to be aligned
04:30 PM mrec: that's why the key is still there.
04:30 PM Tom_L: not buyin it for a min
04:34 PM mrec: https://snipboard.io/LqRVWx.jpg
04:35 PM mrec: ethernet connector on the left = spindle control
04:49 PM * JT-Shop uses Gecko drives and has no stepper issues at all for 13 years
04:49 PM JT-Shop: https://www.youtube.com/watch?v=knf3cPrZPrk
04:51 PM mrec: well it's in particular about nema17
04:51 PM mrec: I have no problems with all my other motors either
04:52 PM mrec: the noise for sure comes from the coils
04:52 PM JT-Shop: could be too much current... same drives different motors?
04:52 PM mrec: I just took what I have here
04:52 PM JT-Shop: loose coils?
04:52 PM mrec: it's set to 400mA
04:53 PM Tom_L: not a chopper drive?
04:53 PM mrec: and I'm driving the PCB with 24V (=best result, max voltage according to the spec)
04:54 PM mrec: it's a simple stepper with that makerbase pcb on it with some allegro driver and encoder
04:54 PM mrec: mks servo42b = closed loop stepper
06:00 PM perry_j1987: any good amazon prime day deals?
07:11 PM tiwake[m]: screw amazon
07:11 PM skunkworks: you guys are so harsh.. ;)
07:28 PM Tom_L: good deals for the sellers
08:42 PM n283 is now known as norias
09:02 PM CloudEvil: The amazon deal that slightly interested me was the echo flex for 9.99 but then I found they haven't released the accessory port specs
09:35 PM veegee: My precision gage blocks, what oil should I store them in? Something with a lot of anti corrosives ideally
09:35 PM veegee: I don't think automotive detergent oil is a good idea
09:35 PM veegee: slide way oil or hydraulic oil maybe?
09:35 PM Tom_L: 3 in 1 light weight oil
09:36 PM Tom_L: or cosmoline if you prefer
09:36 PM CloudEvil: Vacuum
09:36 PM CloudEvil: More seriously, throwing some dessicant in the box too isn't a bad idea
09:36 PM Tom_L: http://www.starrett-webber.com/GB45.html
09:37 PM Tom_L: Starrett M-1
09:37 PM veegee: CloudEvil dessicant gets consumed so fast when exposed to air
09:37 PM veegee: it's useless
09:37 PM veegee: It's only useful in a sealed container with a finite amount of moisture
09:37 PM veegee: desiccant*
09:37 PM Tom_L: are they in a felt padded box?
09:38 PM veegee: Starrett M1 is fine, thanks Tom_L
09:38 PM CloudEvil: https://www.starrett.co.uk/shop/precision/oils/tool-instrumentoil/
09:38 PM veegee: It's probably nothing special
09:38 PM roycroft: lumber prices are dropping rapidly
09:38 PM roycroft: veegee: i like starrett tool oil for that kind of stuff
09:38 PM Tom_L: veegee, it's probably 3 in 1 oil
09:38 PM veegee: but don't know enough about oil chemistry at this point to argue over a few dollars
09:38 PM CloudEvil: veegee: yes, I mean if you have an actual semi-sealed box
09:39 PM veegee: I'm going to send a sample of the M1 oil for analysis
09:39 PM roycroft: it's expensive, but it lasts a long time
09:43 PM Tom_L: they should be untouched by human hands too
09:43 PM veegee: Yeah I always use gloves
09:47 PM Tom_L: i fought a cutter path on my cad cam all evening the other day and never could get it the way i wanted it. tonight i fixed it in like 10 min
09:47 PM * Tom_L blames it on the moon phase
09:56 PM roycroft: a lot of woodworkers use camilia oil or jojoba oil on their ferrous metal tools to keep them from rusting, but i find those oils get gummy over time
09:57 PM roycroft: they don't go rancid, but they definitely get thick and sticky, which are bad things when one is around sawdust
09:57 PM XXCoder: dont gummy means it takes up some thickness
09:57 PM roycroft: i use the starrett oil on my woodworking tools
09:57 PM XXCoder: which means bad for gages
09:57 PM roycroft: yes, it does form a film
09:58 PM roycroft: all lubricants do, to some degree
09:59 PM roycroft: the starrett oil is really thin, but when i'm using things like gage blocks i remove the oil with solvent before use, and reoil after
10:00 PM Tom_L: should be kept in a 68-70F room also
10:00 PM roycroft: well, used in a controlled environment
10:00 PM roycroft: they can be stored at other temperatures, but they are not accurate at those temperatures
10:01 PM Tom_L: an inspection room should be far better controlled than any shop
10:01 PM roycroft: on a day like today (it's still 31 degrees at almost 8pm) my gage blocks are not even close to being accurate
10:02 PM Tom_L: i got one from the local gage lab uncertified to use on my calipers
10:02 PM XXCoder: tom gonna love QA room. its cool in summer, and warmish in winter
10:02 PM Tom_L: basically use it like a 1-2-3 block for thickness
10:03 PM Tom_L: i felt it was probably more accurate than a 1-2-3 block when i got it
10:04 PM Tom_L: it gets no special treatment
10:04 PM JavaBean: aren't 123 blocks "certified" usually?
10:04 PM roycroft: it depends on where you get them
10:04 PM roycroft: and whether they're certified or not :)
10:04 PM roycroft: the $20 ones you get on ebay are not
10:05 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/calipers/Mitutoyo2.jpg
10:05 PM Tom_L: that's where i keep it
10:05 PM XXCoder: shop i worked at, gages isnt certified, but tools you use must be certified
10:06 PM XXCoder: ie you check size using caliper or whatever
10:06 PM JavaBean: did you make that??
10:06 PM Tom_L: we had a lab come in every so often and recert critical things
10:06 PM Tom_L: yes
10:06 PM JavaBean: nice and purty
10:06 PM Tom_L: i had a walnut one for my old pair
10:07 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/temp/calipers.jpg
10:07 PM XXCoder: i always wanted to make one
10:07 PM JavaBean: just for asking... why no felt and dessicant?
10:07 PM XXCoder: one of projects i planned once my cnc router worked
10:08 PM Tom_L: things i do at home aren't that critical
10:08 PM roycroft: my mitutoyo calipers came in a plastic case
10:08 PM XXCoder: id add felt but diseccant, not important when shop is properly managed and low humidity
10:08 PM Tom_L: everything is plastic now
10:08 PM roycroft: i don't think they've been back in the case since the day i got them
10:09 PM roycroft: so i'll probably not make a nice wooden box for them
10:09 PM XXCoder: i dont use cases, i just use drawer in tool cart. nicely arranged
10:09 PM XXCoder: i just hope its not rusty now. havent seen em for almost year now
10:09 PM Tom_L: the axial indicator i got came in a plastic case but showed a wood one on the site
10:09 PM JavaBean: mine stay in a box/case... but then again, mine are also on a horizontal surface
10:13 PM Tom_L: the good mitutoyo mic stays in the house
10:59 PM veegee: CloudEvil I know you were kidding about the vacuum, but I'm considering it seriously
10:59 PM veegee: I have a spare vacuum chamber and pump that I verified pulls an absolute pressure of 2 Pa
11:00 PM veegee: Probably even easier is a vessel filled with argon
11:01 PM veegee: Cheap and simple and argon displaces oxygen and many other gasses
11:02 PM JavaBean: doesn't nitrogen do the same thing, and could be even cheaper?
11:02 PM veegee: I already have a huge argon cylinder
11:02 PM veegee: for TIG welding
11:02 PM veegee: I have no need to buy a nitrogen cylinder. What would I use nitrogen for?
11:05 PM veegee: Argon doubles as a great humane way to kill suffering animals
11:05 PM veegee: They still use CO2 in the labs for some reason, but that is known to trigger a panic/suffocation response
11:05 PM JavaBean: well, you can filter nitrogen out of a compressed air stream(aka get nitrogen out of compressed air lines)... last i heard those "filter" things were pretty cheap, and will last quite a while
11:05 PM veegee: Did not know that
11:05 PM XXCoder: or build air distillery with stirling
11:06 PM JavaBean: it is part of the setup needed to make liquid nitrogen
11:08 PM veegee: LPS2 and LPS3 look like the right thing to use
11:41 PM roycroft: eek
11:42 PM roycroft: now the forecast is for a high of 38 over the weekend
11:44 PM XXCoder: 80s f here
11:44 PM XXCoder: f