#linuxcnc Logs
May 09 2021
#linuxcnc Calendar
12:28 AM -!- #linuxcnc mode set to +v by ChanServ
12:41 AM Bleepshop: XXCoder: Latest pic with the new arm, 8020 backframe, worklight and vacuum system installed. https://imgur.com/a/6iGsfPi
12:51 AM XXCoder: looking
12:51 AM XXCoder: thats good
12:51 AM XXCoder: making progress
12:52 AM Bleepshop: Amazing what I can pull out of a junkpile I've spent 10 years collecting. LOL
12:52 AM XXCoder: :)
12:52 AM XXCoder: im working on game part design still
12:52 AM XXCoder: i want dots lengths to be consient but issues with that
12:53 AM Bleepshop: Now I've got a pile of rack gears that were for building a CNC table that are now surplus to my needs.
12:57 AM XXCoder: HMMM
12:58 AM XXCoder: you can easily build a wall 4x8 sheet cnc with that
12:58 AM XXCoder: all you need is small z
01:02 AM Bleepshop: This one will handle 4x8 or 4x12 with indexing.
01:02 AM XXCoder: ahh so you wouldnt need to build another
01:02 AM XXCoder: hmmm
01:02 AM XXCoder: no idea what to do with rack gears then lol
01:03 AM * Bleepshop has all the rack gear from several stair lifts...
01:03 AM XXCoder: lol i would love those to make my 4x8 router, but shipping would cost a bomb
01:09 AM Bleepshop: Probably not. I think the longest pieces of the huge stuff are 5' and the smaller stuff is 1m lengths.
01:12 AM XXCoder: hmm
01:12 AM XXCoder: oh well lol
01:12 AM XXCoder: some of those can be extended by just laying along, but yeah
01:12 AM Bleepshop: The drive heads are what weighs a ton on these.
01:13 AM Bleepshop: Acorn/LeMac 120/130 stairlift parts if you want to look them up
01:14 AM XXCoder: strong enough tp push 400 pound person up stairs
01:14 AM XXCoder: very strong id say
01:16 AM Bleepshop: Yeah, I figured I could drag around a 2HP router with those and the Nema-23 steppers I've got.
01:16 AM XXCoder: yeah though ended up not needing em lol
01:21 AM Bleepshop: Story of my shop. Collect parts to build 'something' and 'Wham!" suddenly most of a 'something' appears leaving me with piles of useless spares after I've annoyed it into functioning again.
01:21 AM XXCoder: i have bunch of spare SBRs and ballscrews
01:21 AM XXCoder: dunno what to do with em.
01:21 AM XXCoder: my orginial plan was to build a shitty wood router with those
01:21 AM XXCoder: then make better cnc router with it
01:21 AM XXCoder: then move stuff over to it
01:22 AM Bleepshop: SBR ? Sliding block ?
01:23 AM XXCoder: nah supported bar
01:24 AM XXCoder: https://bulkman3d.com/wp-content/uploads/2020/10/%E4%B8%BB%E5%9B%BE-2-600x600.jpg
01:24 AM XXCoder: like this
01:24 AM Bleepshop: Yeah, Block/bar combo.
01:24 AM XXCoder: supported bar round
01:24 AM XXCoder: i think thats full name
01:25 AM Bleepshop: Yep. Bars go on the table and blocks go on the moving bit.
01:27 AM XXCoder: yeah you could invert it for some stuff but thats general use yeah
01:39 AM XXCoder: sigh designing fun lol
01:57 AM roycroft: i'm not sure about elon musk hosting snl yet
01:57 AM roycroft: he's pretty weird
01:58 AM XXCoder: no idea ill just leave it till actually happen lol
01:59 AM XXCoder: i dont watch snl for long while now
02:12 AM XXCoder: Bleepshop: https://media.discordapp.net/attachments/558398870388867073/840845320174174248/unknown.png
02:20 AM roycroft: i watch it fairly regularly
02:20 AM roycroft: it's happening right now, btw
02:20 AM XXCoder: cool :)
02:20 AM XXCoder: did you see my design pictured?
02:21 AM roycroft: and i'm still not sure about him
02:21 AM roycroft: i saw the game you're printing a while ago
02:22 AM XXCoder: i pritned few very thin prototypes before i realized i got number of peg holes wrong lol
02:22 AM XXCoder: its nearly 400mm big, way too big for my printer lol i guess i gonna scale
02:29 AM XXCoder: yo
05:41 AM JT-Cave: morning
06:08 AM Tom_itx: morning
06:09 AM Tom_itx is now known as Tom_L
07:15 AM -!- #linuxcnc mode set to +v by ChanServ
07:29 AM unterhaus_: Fusion 360 has had a series of bad updates recently
07:49 AM JavaBean: from listening to all the various people that have been complaining about f360 borking on update over the last couple of years, has it ever NOT had bad updates?
07:52 AM veegee: JavaBean fusion360 really needs a good open source competitor
07:53 AM veegee: it's so laggy even on my 5950x with a 1080Ti
07:54 AM -!- #linuxcnc mode set to +v by ChanServ
07:54 AM -!- #linuxcnc mode set to +v by ChanServ
07:59 AM JavaBean: have you tried one called "BRL-CAD"? something i have only heard of recently so haven't been able to try it
08:26 AM drdoc: JavaBean: that's been around almost as long as computers
08:26 AM drdoc: it's free, and documented by the US Department of Defense
08:27 AM drdoc: I dunno if it's still developed by the DoD but it was until pretty recently
08:28 AM drdoc: one of the advanced tutorials is a complete troop carrier
08:42 AM JavaBean: lol, i just recently learned about its existance
08:48 AM drdoc: Seriously, if you learn easily reading docs and following tutorials, BRL is something you want to look at
08:49 AM drdoc: the Army requirement for software documentation is basically "If a drunken chicken can't follow the directions, rewrite."
08:50 AM drdoc: JavaBean: I really want to learn it. but the learning curve is *steep*
08:51 AM JavaBean: sounds like you need someone yelling in your ear to help with motivation
08:54 AM drdoc: right?
08:55 AM drdoc: I dunno how anyone designs in F360. It makes me want to throw things
08:56 AM JavaBean: i have heard f360 users say the same thing about other 'cad softwares
08:56 AM drdoc: yup
08:57 AM drdoc: but I've used several cad suites that don't
08:57 AM drdoc: make me want to throw things, I mean
09:03 AM drdoc: roycroft: dangit, man
09:05 AM drdoc: I keep going back to look at that Schmidt design
09:36 AM Tom_L: BRL-CAD has cam also?
09:37 AM Tom_L: drdoc, 360 is as good as any acad product ehh?
09:42 AM drdoc: I'm pretty sure BRL does not have cam
09:42 AM drdoc: and I'd rather use Inventor than 360, by far
09:43 AM drdoc: honestly I might rather use sketchup than 360
09:43 AM drdoc: ;)
09:47 AM Tom_L: no good to me without cam
09:52 AM drdoc: how good is Heeks cam?
09:54 AM drdoc: for prototype & maybe very small-run projects, mostly 2.5D
09:54 AM drdoc: and some PCB stuff
09:57 AM drdoc: Ugh
09:58 AM drdoc: "Blender isn't CAD, it's CAM, right? Computer Aided Modeling?"
10:03 AM colten: hrmm. I need my windows key to scroll up or use directional arrows. weird
10:17 AM Tom_L: no OS is good enough to have it's own dedicated key
10:17 AM JT-Shop: hmm, I should make the vesa mount for this touch screen and get it mounted to the bp
10:18 AM Tom_L: i did figure out how my tool table file works last night
10:18 AM Tom_L: added a few more tools manually and they seem to show up and work
10:18 AM Tom_L: now i'm cleaning a kbd i just spilled crap on
10:19 AM Tom_L: starting the day off right!
10:20 AM JT-Shop: lol
10:21 AM Tom_L: it's a tough old kbd that's been to hell and back with me
10:27 AM Tom_L: and it works again
10:30 AM JT-Shop: every now and then I shake the chips out of the 28 year old VMC keyboard
10:37 AM Tom_L: this one has the old 'big' plug on it
10:38 AM Tom_L: high yesterday 84, high today 59
10:44 AM JT-Shop: hmmm x axis servo on the bp sounds crunchy
10:45 AM Tom_L: had any previous trouble with it?
10:47 AM JT-Shop: no
10:51 AM Tom_L: JT-Shop, years ago a friend gave me this. i thought you might get a kick out of it: http://tom-itx.no-ip.biz:81/~webpage/send_money.pdf
10:53 AM Tom_L: was cleaning out stuff yesterday and ran across it
10:57 AM -!- #linuxcnc mode set to +v by ChanServ
11:02 AM -!- #linuxcnc mode set to +v by ChanServ
11:18 AM JT-Shop: Tom_L, that sounds about right
11:18 AM Tom_L: you can tell it was written long ago
11:30 AM JT-Shop: I guess it's time to clean the shop... can't find my 1/4" 90 single flute
11:31 AM Tom_L: chamfer tool?
11:38 AM JT-Shop: aye
11:39 AM JT-Shop: and last time I saw it was out of place...
11:40 AM Tom_L: i poked some holes in a board to keep stuff like that
11:40 AM JT-Shop: bbl
11:46 AM -!- #linuxcnc mode set to +v by ChanServ
12:10 PM -!- #linuxcnc mode set to +v by ChanServ
12:19 PM _unreal_: I dont get it I ordered this https://www.amazon.com/gp/product/B074CV9VVJ/ref=ppx_yo_dt_b_asin_title_o03_s03?ie=UTF8&psc=1 but I cant get it to even burn paper?
12:20 PM _unreal_: its a 5v laser I'm giving it direct 5v and its not putting out enough power to do a damn thing
12:28 PM unterhaus_: Is it true that machinekit got a new trajectory planner and lcnc didn't?
12:31 PM Bleepshop: _unreal_: Is it a pump laser and it's supposed to have a secondary medium excited by this thing ?
12:34 PM * Bleepshop has seen several designs based on an externally excited lasing medium or a specific optical array.
12:35 PM _unreal_: led
12:39 PM Bleepshop: _unreal_: OK. So measure your current draw and see if it's [5V / 1500mW = ~0.33A] appropriate for the power output level you're looking for. It may want a constant current driver board.
12:51 PM veegee: https://www.kijiji.ca/v-view-details.html?adId=1533809142
12:52 PM veegee: 20kw 3 phase alternator
12:52 PM veegee: so tempted. They're normally really expensive and single phase consumer grade generators are next to useless for me
12:57 PM _unreal_: Bleepshop, Im tinking I I got cheated
12:58 PM _unreal_: and its a blown laser
12:58 PM Bleepshop: _unreal_: I'd have gone for something more like this personally. It's only 0.5W but you don't have to monkey with adding heat sinks or fans and it's supposed to work right out of the box. https://www.amazon.com/F-Yi-Engraving-Machine-Printer-Industrial/dp/B07CRV1STJ
12:59 PM _unreal_: heh Bleepshop its a micro NEJE LASER etcher the body is glued on
01:00 PM roycroft: a defective product does not necessarily indicated cheating
01:00 PM roycroft: that depends on how the seller handles the return/replacement
01:04 PM Rab: According to the Q&A, it has a built-in driver. Reviews are pretty terrible, though.
01:05 PM * Bleepshop notices that the whole damn machine is only $80 at Mall-Wart...
01:25 PM Connor: Hey Guys, question about homes and lathes. Setting up a lathe. The plan was to place the home switch at the headstock end. Got to thinking about it, how do you handle it when you switch out to different lengths of chucks, faceplates etc?
01:33 PM _unreal_: very interesting.. I just dropped an FU seller is cheating people with photos and info etc... about the laser diode I purchaed being a failed and latered device....
01:33 PM _unreal_: suddenly amazon is giving me no results found for laser etcher diodes
01:33 PM _unreal_: very interesting
01:34 PM Bleepshop: Connor: I used a hard mounted switch with an adjustable bar to trigger it. You can drill detent dimples or just eyeball it when you change tooling.
01:34 PM Connor: Right, but doesn't that effect what the machine thinks is the length of travel?
01:35 PM Connor: If you move the switch back 5", it thinks it'll have 5 more inches toward the tailstock when it doesn't
01:35 PM Connor: I'm thinking this is a use case for touching off.
01:36 PM Bleepshop: Subtract that amount from your ways in your config. Or set up a config for each configuration.
01:36 PM Connor: Yea, that's what I was trying to avoid.
01:37 PM Bleepshop: Or run 2 configs, one for max travel with the shortest stack and one that is set for the tall stack.
01:38 PM * Bleepshop has reconfigured this machine so many times he could probably configure it in his sleep.
01:39 PM Bleepshop: But on the plus side I now know how each option in StepConf can screw up your day. LOL
01:40 PM _unreal_: oh wow... even more wow so I just went to "duckduckgo.com" and typed in "1.5watt laser diode amazon" and I am getting tons of results
01:41 PM pcw_home: unterhaus_: LinuxCNCs and Machinekits TP are identical AFAIK (+- any minor changes after the the split)
01:42 PM unterhaus_: I thought Robert Ellenburg wrote a new TP and the other day someone said it was only in MK
01:44 PM unterhaus_: Last time I looked at the source, the TP in lcnc looked the same as it has for 25 years
01:44 PM Tom_L: unterhaus_, i think they both shared the trajectory code
01:45 PM unterhaus_: I'm trying to think of what ML thread someone said that in
01:47 PM Connor: I'm thinking of having the home switch fixed, and an adjustable hard limit tied in series with the estop.
01:48 PM rs[m]: linuxcnc used to do some sort of "parabolic blending" (in the words of rob ellenberg), until the changes ellenberg made
01:48 PM rs[m]: machinekit fork was later afaik
01:49 PM rs[m]: you can change the TP at runtime in MK, but I don't know any alternative TP
01:49 PM Tom_L: it's been around for a while now
01:51 PM -!- #linuxcnc mode set to +v by ChanServ
02:20 PM JT-Shop: removed a PC from my desk... I know there is a desk down there somewhere
02:22 PM pcw_home: unterhaus_: Robert Ellenburg's new TP (development underwritten by Tormach) is in both MK and LinuxCNC
02:23 PM skunkworks: unterhaus_: Linuxcnc has the new trajectory planner.. I know MK has it to but I don't know if it has all the bug fixes..
02:24 PM Tom_itx: JT-Shop, at least you found the PC
02:25 PM Connor: Question on steppers.. setting the current limit to match the stepper. is it okay to go slightly above? I burned up a stepper because I forgot to change the setting..
02:25 PM Connor: but, I feel like I'm loosing steps with matched exactly.
02:26 PM Tom_itx is now known as Tom_L
02:26 PM Connor: in bipolar series, 3.86v 2.1 amp per phase. I have a 2.1 amp setting, and go up to 2.7a
02:27 PM Connor: also set the half current option.
02:27 PM Connor: for when it's idle.
02:27 PM skunkworks: what volatage are you running them at?
02:27 PM Connor: 48v
02:28 PM Connor: never understood the voltage thing. why steppers we're like 2-5v, but you always used much larger than that.
02:28 PM skunkworks: You could try them higher and just keep an eye on them..
02:29 PM skunkworks: The higher the voltage - the quicker you can change the current..
02:29 PM skunkworks: in the stepper
02:31 PM Tom_L: Connor, because they are pulsed voltages
02:32 PM Connor: Bumped them to 2.7 from 2.1 Sheet says 2.1
02:32 PM Tom_L: just like the tv remote leds are over powered (atleast some of them )
02:32 PM pcw_home: the static voltage at full current is a couple volts (just I*R)
02:32 PM Tom_L: but it's a pulse so it doesn't pop the led
02:32 PM Connor: I had them on 5.6a by accident and burned one up
02:32 PM Tom_L: well yeah
02:33 PM pcw_home: 4X the power...
02:33 PM Connor: 2.7 running the chess pawn program.
02:44 PM JT-Shop: opps the plates on the van expired in january
02:45 PM roycroft: hopefully, you discovered this on your own, without the assistance of a state trooper
02:52 PM * JT-Shop should clean the desk more often
02:53 PM JT-Shop: roycroft, a buddy just sent me a text that he has 350 bd ft of 5/4 quarter sawn white oak 12-13" wide and 9' long for $7.50 a bd ft
02:54 PM Connor: Can you do Shared Homes, plus a individual limit?
02:54 PM Connor: X + Z home, and a Z limit ?
02:54 PM Connor: I don't see that in PNPConf
02:56 PM Connor: n/m found it.
03:00 PM roycroft: nice
03:01 PM roycroft: i don't have that much cash in the budget for materials, but i'd be tempted to buy it all anyway, if it's straight and clear
03:09 PM JT-Shop: I'm tempted to get some of it
03:10 PM JT-Shop: I have 7 trees to cut down this summer but none would make wood that wide quarter sawn
03:36 PM -!- #linuxcnc mode set to +v by ChanServ
04:02 PM JT-Shop: https://gnipsel.com/images/bp-knee-mill/touch-screen-01.jpg
04:02 PM JT-Shop: I have room for bigger buttons now
04:14 PM Tom_L: you think?
04:18 PM JT-Shop: and it's much lower now with that vesa mount I made today
04:18 PM JT-Shop: actually didn't realize how big it was when I bought it lol
04:20 PM JT-Shop: one of the button head cap screws on the x axis belt cover is stuck :(
04:29 PM JT-Shop: the very old hand impact tool got the screw out... I bought that tool when I was 16 or 17 to work on my Honda 50 Super Sport
04:31 PM drdoc: Hah!
04:31 PM drdoc: I bought mine to work on a '67 Moto Guzzi
04:39 PM JT-Shop: crunchy bearing on the servo... can't recall if I've ever taken one apart or not
04:40 PM JT-Shop: that would have been 1970 for me
04:42 PM Tom_L: 4k?
04:44 PM Tom_L: damn, fswizzard says to run this cutter at 3500s 64.77f
04:44 PM drdoc: JT-Shop: '77 or '78 for me
04:45 PM Tom_L: that's with the 80 - 30% cut
04:46 PM Tom_L: .56 hp so it should handle it ok
04:49 PM Tom_L: the difference in feed from a 30 to 60 deg helix is 10 ipm increase
04:58 PM JT-Shop: wow
04:59 PM flyback is now known as gargamel
04:59 PM gargamel is now known as flyback
05:00 PM Tom_L: 3500 @ 42 ipm with a .004 chip load
05:01 PM Tom_L: using the 80 30 percent
05:01 PM Tom_L: if you're doing production the 60 deg helix really pay off
05:02 PM Tom_L: they're not much more if any in cost
05:04 PM JT-Shop: after taking everything off the wrong end of the servo I find the magic bolts that hold the housing together
05:04 PM Tom_L: of course
05:04 PM JT-Shop: 80 doc?
05:04 PM Tom_L: percent
05:04 PM Tom_L: 80 depth 30 width in percent
05:05 PM Tom_L: so .3 deep roughly .125 width
05:05 PM Tom_L: and supposedly it's not as hard on the cutter
05:07 PM Tom_L: on one part i'd been taking like 3/4 or more width on my .250 em probably .187 deep
05:07 PM Tom_L: 75% width
05:09 PM Tom_L: with regular 30deg helix carbide
05:14 PM drdoc: Tom_L: would you recommend fswizard?
05:15 PM Tom_L: i've got it on my phone
05:15 PM Tom_L: and use it from time to time
05:15 PM Tom_L: seems pretty accurate
05:16 PM Tom_L: mostly i've been toying with depth and width of cut
05:16 PM Tom_L: https://www.lakeshorecarbide.com/videos.aspx
05:17 PM Tom_L: watch 8 & 9 and decide for yourself
05:17 PM drdoc: that 80-30 formula is almost exactly upside down from what I was taught
05:17 PM Tom_L: yes
05:17 PM Tom_L: zeeshan here originally got me onto the idea
05:18 PM drdoc: it makes sense
05:18 PM Tom_L: it's supposed to be easier on the cutter
05:18 PM Tom_L: and you can go with higher feedrates overall
05:18 PM drdoc: right
05:18 PM Tom_L: but this next test validates the helix angle
05:19 PM Tom_L: i haven't tried these new cutters yet
05:19 PM drdoc: that is a crazy-looking tool
05:19 PM Tom_L: alum
05:19 PM drdoc: the ones you posted yesterday?\
05:19 PM Tom_L: they use them alot here for production, i've just not had any myself
05:19 PM Tom_L: yes
05:20 PM Tom_L: i got mine from that site
05:20 PM Tom_L: they make some nice tooling
05:20 PM drdoc: the asymmetric blades kill me
05:21 PM drdoc: ooooh, thanks for that video link
05:22 PM drdoc: I'm finding that a lot of my rules-of-thumb aren't anymore
05:23 PM drdoc: better tool metallurgy, more than anything else, has changed the game
05:25 PM Tom_L: yes
05:26 PM Tom_L: my kid runs a zimmerman gantry at his work with some fairly big parts and they're running 200+ ipm on alum
05:26 PM Tom_L: 24' long 6" thick alum slab
05:27 PM Tom_L: but it's a high speed spindle and built to run
05:28 PM Tom_L: just because fswizzard says it's so, doesn't mean my machine will like it
05:28 PM Tom_L: so far it's been fine
05:28 PM drdoc: "just because fswizzard says it's so, doesn't mean my machine will like it"
05:29 PM drdoc: that's true for pretty-much any tool I use
05:29 PM Tom_L: what machine do you have?
05:29 PM drdoc: shop-built V-slot router
05:30 PM Tom_L: use it but lighten the chip load and you'll figure out what it likes
05:30 PM drdoc: right
05:30 PM Tom_L: i'm still learning mine
05:30 PM Tom_L: i started on the light side and have been increasing the load slowly
05:30 PM drdoc: By the way. That Baldor 2x48 auction grinder
05:31 PM drdoc: it's a 3450rpm 1.5HP motor, my old Grizzly 2x72 is a 1750 1HP
05:32 PM drdoc: If that Baldor motor is only 1.5x the torque of the Grizzly, I'll lick the belt while it's running
05:33 PM drdoc: by rights the slower motor ought to have (relatively) more torque, yes?
05:34 PM JT-Shop: hmm google fails to tell me how to get the servo apart...
05:34 PM Tom_L: that was my theory on choosing a spindle motor
05:35 PM Tom_L: JT-Shop, need a new servo motor?
05:35 PM Tom_L: or bearings...
05:35 PM Bleepshop: drdoc: Depends on several factors including whether or not there's gearing involved.
05:36 PM drdoc: Bleepshop: both direct drive, the griz has an 8" drive wheel vs the Baldor's 7", so still less fpm
05:36 PM -!- #linuxcnc mode set to +v by ChanServ
05:37 PM drdoc: I always thought that Grizzly motor wasn't quite up to its rating, despite being FRIGGING HUGE
05:37 PM JT-Shop: no, just a new bearing
05:37 PM drdoc: but I never had an apples-to-apples comparison
05:37 PM Bleepshop: drdoc: They do tend to be oveexuberant in their motor ratings.
05:38 PM drdoc: that is a very good way to put it
05:38 PM drdoc: baldor, otoh, are reticent if anything
05:38 PM * Bleepshop can be tactful... Occaisionally... ;D
05:39 PM drdoc: anyway
05:40 PM drdoc: I got a little "auction fever" bidding on that thing, and spent more than I had said I would
05:40 PM drdoc: I'm very glad I did
05:42 PM drdoc: trying to decide whether to replace the motor with 3ph and VFD for variable speed
05:43 PM Bleepshop: drdoc: Simple rule of thumb. Mass * Velocity = Ouch! That Baldor is rotating at twice the speed with probably twice the mass in the armature which means it'll be a lot less prone to slowing under sudden load.
05:46 PM drdoc: I'd say the Grizzly has the heavier armature
05:46 PM Bleepshop: I've got a pair of 4x36s here, one's an old 3600RPM Craftsman and the other one is an 1725RPM HF cheapie. Same situation the old one removes >4x the material with the exact same belt.
05:47 PM XXCoder: hey all
05:48 PM Bleepshop: XXCoder!
05:48 PM XXCoder: whats up
05:48 PM drdoc: I think I know why the school district scrapped this one - I bet it was snapping belts left & right
05:51 PM drdoc: That ain't right... https://imgur.com/gallery/AKl8APE
05:51 PM XXCoder: "caution"
05:51 PM Bleepshop: XXCoder: Got the rest of the extra goodies for the dust collection together. Hanger for the pipe under the table, cleanup hose port on the big can and with the spare parts threw together a hardware/change trap I can put on the can or right on the vac for cleaning out the car..
05:51 PM XXCoder: gonna love older models
05:52 PM XXCoder: dr im not too familiar with that model so im not sure whats wrong, besides possibly lack of rubvber for top
05:53 PM Bleepshop: drdoc: Platen is way too far forward and it's eating the backer off the belt.
05:53 PM drdoc: look how the platen is set
05:53 PM drdoc: yup
05:54 PM Bleepshop: Face it with a piece of 1/4" ceramic tile and move it back 1/2"
05:54 PM drdoc: I have pyrex on the griz
05:54 PM drdoc: but yeah
05:54 PM XXCoder: ahh
05:54 PM XXCoder: i wonder if plate is remade
05:55 PM Bleepshop: I have 18" square Hi-Gloss white pieces to play with.
05:55 PM XXCoder: dr wonder if you can lower it some, and add rounded edges
05:55 PM Bleepshop: Tile not Pyrex.
05:55 PM drdoc: lower the platen?
05:55 PM XXCoder: yeah though i dont think its right thing to do now
05:56 PM XXCoder: rounding it off maybe tho
05:56 PM drdoc: no, I backed it up so it's running properly
05:56 PM Bleepshop: drdoc: Loosen the bolt and let the belt tension move the platen back. That'll fix it for now.
05:57 PM XXCoder: nice
05:58 PM drdoc: Bleepshop: already done. I'm not going to glass it till I decide whether to keep that platen assembly
05:59 PM drdoc: Bleepshop: that contact wheel is a monster
05:59 PM XXCoder: im just wondering why only one wheel has rubber
06:00 PM drdoc: XXCoder: a lot of belt grinders don't have rubber at all
06:00 PM XXCoder: i wonder if it orginially had both of wheels have rubber
06:00 PM XXCoder: yeah though mismatch is what is making me wonder
06:01 PM drdoc: the top wheel is crowned - it's adjustable so you can tune the belt tracking
06:04 PM drdoc: XXCoder: some stock photos:
06:04 PM drdoc: https://www.google.com/search?q=baldor+248-151TD&source=lnms&tbm=isch
06:04 PM -!- #linuxcnc mode set to +v by ChanServ
06:04 PM XXCoder: it does look like bare - rubber
06:05 PM XXCoder: well congats on your buy, it looks very good
06:05 PM XXCoder: just need some adjustments
06:07 PM Bleepshop: Even if it was toasted I'd drag one of those home from the scrapyard for a buildable core.
06:07 PM Bleepshop: drdoc: Nice score.
06:11 PM drdoc: that was my thought - the plug was cut off the cord so it was a gamble
06:12 PM drdoc: new plug, couple hour round trip to pick it up, and $125, and it runs like new
06:13 PM drdoc: it's got a lot of "oopsie" scars, consistent with high-school shop use, but virtually no real wear
06:13 PM drdoc: that contact wheel is pristine and the motor feels & sounds new
06:14 PM drdoc: it did have a big dent in the fan shroud that the fan was hitting but me & Mr. Mallet fixed it
06:15 PM drdoc: I think the Grizzly is for sale...
06:15 PM XXCoder: awesome indeed. old cast stuff is pretty damn strong
06:15 PM XXCoder: and you gonna love old labeling style. "caution"
06:18 PM drdoc: XXCoder: that's a different machine
06:18 PM drdoc: a blister-packer
06:18 PM XXCoder: thought you bought a belt sander?
06:19 PM drdoc: the caution label is on a machine behind the belt grinder
06:19 PM XXCoder: ohh
06:19 PM XXCoder: lol ok
06:20 PM XXCoder: looked again, yeah "hot pven" what the how did i miss that
06:20 PM * Tom_L hits XXCoder with a clue bat
06:20 PM drdoc: sometimes we see exactly what we expect
06:20 PM XXCoder: indeed
06:22 PM -!- #linuxcnc mode set to +v by ChanServ
06:25 PM drdoc: I'd like to clean up the pedestal before I remount it. It's pretty cool on its own
06:44 PM drdoc: Bleepshop: I really dig this:
06:44 PM drdoc: https://imgur.com/gallery/OqGxQHJ
06:47 PM -!- #linuxcnc mode set to +v by ChanServ
06:54 PM drdoc: I'm kind of curious whether that old starter works
07:01 PM XXCoder: scrap?
07:01 PM XXCoder: i see tray was broken, but besides rust it seem to look fine
09:09 PM Tom_L: ok i did a test cut with the new cutters @ .200 depth & .125 width of cut: https://www.youtube.com/watch?v=A7PcbEKrtkI
09:09 PM Tom_L: surface finish after that cut: http://tom-itx.no-ip.biz:81/~webpage/cnc/cutters/60Deg_3Flute_3500R_F30_Finish.jpg
09:09 PM Tom_L: i'd like to figure out how to get the spindle to recover a bit quicker
09:10 PM Tom_L: i tried F35 but the finish started to degrade at that point
09:18 PM drdoc: http://www.vintagemachinery.org/photoindex/images/12891-A.jpg
09:19 PM Tom_L: that one's older than mine
09:19 PM Tom_L: looks like a newish switch
09:19 PM drdoc: I'm pretty sure that's the pedestal my Baldor was mounted on
09:19 PM Tom_L: i made one for mine
09:20 PM drdoc: mines not nearly that clean
09:20 PM drdoc: https://imgur.com/gallery/OqGxQHJ
09:22 PM drdoc: that coolant shelf would be a total kneecapper, even intact
11:04 PM _unreal_: Tom_L, got my pwm control board built finally and got some of the code working
11:04 PM _unreal_: so I can at least control the speed of the fans