#linuxcnc Logs

Mar 18 2018

#linuxcnc Calendar

01:36 AM IchGucksLive: hi all
01:39 AM IchGucksLive: CaptHindsight: still on
01:51 AM IchGucksLive: out in the snow
02:03 AM fragalot: hi
02:08 AM XXCoder: yo
02:08 AM jimmylu2333-sr: hi
02:19 AM hazzy-dev1 is now known as hazzy-dev
02:20 AM _nexxus__ is now known as _nexxus_
02:45 AM gloops: 4 inch of snow, great
02:46 AM XXCoder: zero inch of snow here
02:57 AM Deejay: moin
04:07 AM gloops: mainly with blender atm, no other mesh software is worth bothering with
04:11 AM XXCoder: huh
04:41 AM XXCoder: hey pink_vampire
04:52 AM gloops: Russia election hit by huge cyber attack as voters go to the polls http://thesun.uk/6017DVPtz
04:56 AM XXCoder: gloops: is you talking with someone else?
04:57 AM gloops: err no lol, just looking at the news
04:57 AM XXCoder: oh talking about earlier
04:57 AM XXCoder: comment about blender
04:57 AM gloops: just a random comment yes, i dont know if there are any other blender users here
04:58 AM XXCoder: lol ok
05:00 AM gloops: i dont suppose metalworking cncers would have much use for blender, it would be useful for some 3d printing though, and wood
05:01 AM XXCoder: blender seems to be more artistic than precise engineer type
05:02 AM gloops: i think it could be precise, as precise as you want, but there are probably better ways to do that
05:07 AM XXCoder: heh I once did tutoral with blender with techinical part
05:07 AM XXCoder: it was insanely hard]
05:07 AM XXCoder: freecad was very simple to do same part
05:09 AM gloops: horses for courses, try making a realistic horse in freecad - that runs
05:10 AM XXCoder: yeah that'd be example of same thing
05:11 AM XXCoder: blender that'd be much easier than freecad
05:13 AM gloops: the thing with apps like belnder, its not so much hard to learn, as big, theres a lot to learn
05:13 AM gloops: even navigating the workspace
05:14 AM gloops: they are big operations, its a lot to sink in, i just keep going back to it and getting more familiar with it, you get a feel for it in the end
05:15 AM XXCoder: heh yeah I just dont have enough ponental use for blender for it to be worth it to me
05:15 AM XXCoder: freecad though
05:15 AM XXCoder: lots uses, so I learned a bunch on how to use it
05:15 AM XXCoder: then 0.17 changes some of it lol
05:16 AM gloops: yeah freecad has changed, i was getting used to it, when i looked again it moved on a bit, suppose you can expect that with a growing app
05:17 AM XXCoder: yeah its not even 1.0 yet so cant expect it to be still.
05:17 AM XXCoder: PATH apparently has been changed a lot
05:18 AM gloops: a lot of people are probably watching freecad until it reaches a level where it becomes adequate - then the number of users will explode
05:18 AM XXCoder: it grew a lot fron hellish 0.13 to 0.16
05:18 AM XXCoder: expecially when distos finally updated out of 0.13
05:19 AM gloops: it cant do 3 contour paths so far as i know, the router users wont be interested until it does that, and does it without too much messin
05:19 AM XXCoder: 3 contour paths?
05:19 AM gloops: say like mill/carve a 3d scroll
05:21 AM gloops: https://www.invitinghome.com/Appliques/1/26d2.jpg
05:22 AM XXCoder: that definitely looks nice
05:23 AM gloops: tbh i havent tried importing 3d models into freecad and creating a toolpath, well i did try but i couldnt do it
05:24 AM gloops: you couldnt draw that in freecad without a lot of work, if at all
05:24 AM XXCoder: yeah
05:24 AM XXCoder: possoibly estlcam
05:24 AM gloops: but..it is getting there hopefully
05:24 AM XXCoder: never really played with that
05:25 AM gloops: i did make some g code for simpler shapes which seemed to work fine, but never got round to running any in linuxcnc
05:42 AM jthornton: morning
05:50 AM XXCoder: hey
05:50 AM XXCoder: gloops: cool :)
05:56 AM jthornton: gloops: did you carve that?
05:57 AM gloops: jthornton no not mine just a pic off the web
05:57 AM gloops: ill be posting pics of mine soon hopefully lol
05:58 AM jthornton: got my BP back up yesterday evening
05:59 AM gloops: the mill running?
06:00 AM jthornton: yea stepdown transformer died but turned out I really didn't need it because I had a hot and neutral in the box already so I had 120vac
06:02 AM gloops: alls well that ends well
06:03 AM jthornton: yea gotta cut that harley logo out today
06:03 AM jthornton: so he can finish his coffin trailer
06:06 AM gloops: there was someone in my village who made a coffin side-car, going back to the 80s, i dont know where the coffin came from but the story was it had a 'blood tray' in the bottom which showed signs of being used
06:06 AM gloops: he used to dress up in coat tails and mourning gear his mate in the sidecar wore a butchers apron
06:06 AM jthornton: yea some really weird stuff showed up in the 80's
06:07 AM jthornton: wild
06:07 AM gloops: was pretty normal then yeah lol
06:08 AM jthornton: seems like water to vinegar ratios vary wildly on all the internet pickled egg recipes, what ratio do you use?
06:08 AM XXCoder: jthornton: wonder if you must reach certain PH?
06:08 AM gloops: i dont measure anything precisely, about 1/4 water roughly
06:09 AM XXCoder: if so, you coiuld buy bunch of those cheap ph paper thingies
06:09 AM gloops: you can buy pickling vinegar ready to use
06:09 AM jthornton: I have a ph meter from when I used to brew beer if it still works lol
06:09 AM jthornton: I've never seen that over here
06:12 AM gloops: ive been looking at hop plants - thinking of trying some, theyre expensive for 1 plant though about £14, seed doesnt throw true varieties, although you can grow 'hops' from them pretty easy
06:20 AM fragalot: miss0r|office: https://ufile.io/sghoq <: first draft.. Apparently still missing QTY & partno's, but i'm done with CAD for today. :P
06:33 AM fragalot: miss0r|office: plus its still missing all of the "insert" parts that will be casted into the EG..
07:07 AM gloops: right, belts and pulleys back on X, if i can be bothered i might get a trial run this afternoon
07:12 AM jthornton: fragalot: looks beefy and stout
07:13 AM fragalot: jthornton: hopefully it's not just looks.
07:13 AM phipli: lovely machine : https://www.youtube.com/watch?v=5q4m5hk4lpk
07:13 AM jthornton: morning phipli
07:15 AM phipli: good morning jt
07:15 AM phipli: how goes?
07:15 AM jthornton: good, got my BP back up and running yesterday evening
07:16 AM phipli: new transformers?
07:16 AM phipli: or is that something different?
07:16 AM jthornton: going to try some pickled eggs if I can figure out which recipe to try lol
07:16 AM phipli: :)
07:16 AM phipli: a friend makes pickled eggs - I can find out what they do if you like
07:16 AM jthornton: well I had two transformer problems, one on the BP where the step down died and one on a machine at a customers
07:17 AM jthornton: that would be good
07:17 AM fragalot: pickling eggs is easy
07:17 AM phipli: request sent :)
07:17 AM jthornton: turns out I didn't need the step down in the BP as I had a hot and neutral already in the cabinet
07:17 AM jthornton: thanks
07:17 AM fragalot: what you need is a pile of elephant or cow dung, and the urine of choir boys
07:17 AM jthornton: pickling eggs is easy once you know how
07:18 AM phipli: snowed here again yesterday
07:18 AM jthornton: is that rare to snow this time of year?
07:18 AM phipli: not really
07:18 AM phipli: every time it happens people are shocked "so late in the year"
07:18 AM phipli: but it snows more often now than it does near christmas
07:19 AM fragalot: same here, phipli
07:19 AM jthornton: we went for a 200 mile bike ride yesterday was a bit cold in some areas
07:19 AM phipli: Hasn't snowed much in the last 10->20 years though
07:19 AM phipli: so we're always amazed
07:21 AM phipli: monthly stats for nearish where I live : https://www.metoffice.gov.uk/binaries/content/gallery/mohippo/images/migrated-image/i/keele_snow1.png
07:21 AM phipli: they get more snow there, but the idea is the same
07:21 AM phipli: basically, it does snow in April quite often
07:23 AM phipli: impressive : http://icons.wxug.com/hurricane/chrisburt/yuki2.jpg
07:28 AM jthornton: wow just got an 86g egg
07:30 AM fragalot: that must 've hurt
07:30 AM gloops: lot of info there on there drawings fragalot
07:30 AM phipli: I need to get some better scales
07:31 AM fragalot: gloops: not enough yet though
07:31 AM phipli: we're getting lots at the moment that are too big for the egg boxes
07:32 AM gloops: my concern is the linear bearings spacing on the Y relative to the drop of the z
07:33 AM fragalot: gloops: necessary evil to retain a usable Z travel, and have the clearance to use it
07:34 AM gloops: well, you probably wont be cutting close to the bed so the leverage wont be too great, but could have build taller and spaced those rails further apart, im sure it will be fine though
07:36 AM gloops: this was one of the failures of my first gantry, with yours the strength of the z assembly will be enough to hold it id say
07:37 AM gloops: (taking it for granted the bridge isnt going to bend)
07:37 AM fragalot: oh you meant the X rails
07:37 AM gloops: if you call that the X yes
07:37 AM gloops: the higher ones
07:37 AM fragalot: I can easily adjust those, I do think I can go a bit wider on that
07:37 AM fragalot: i'll do that next time i work on the drawing
07:38 AM gloops: lol, oh no dont change anything, just idle speculation on my part
07:38 AM fragalot: I think I can make it 50mm wider with no negative consequences
07:41 AM gloops: theres a pretty good and simple explanation of the effects cutting forces have on the various parts of the machine - i cant remember the site now, but i read it, and all during this build it was demonstrated correct, by putting force on the various parts during the build and watching what moved
07:42 AM gloops: general theory states the rail spacing should be roughly equal to the z drop
07:42 AM fragalot: rails were around 185, Z drop was 225
07:42 AM fragalot: iirc - don't have the CAD laptop up anymore :P
07:43 AM gloops: not just the travel, the distance from the bottom rail to the cutter
07:44 AM gloops: doesnt matter if the parts are strong enough but the leverage mounts up pretty quick
07:44 AM fragalot: true
07:44 AM fragalot: i'l see what i can make work, as i want to use the rails i already have
07:46 AM gloops: http://www.cncroutersource.com/building-a-cnc-router.html
07:47 AM gloops: might have been that site, simple and for amateurs like me heh, but reasonable arguments
07:47 AM gloops: anyway back to the freezing pit
07:50 AM fragalot: gloops: in 1883 someone figured our you could use electricity as a heat source
07:50 AM fragalot: gloops: i'd recommend you make use of that, or an alternative source of heat. :)
08:16 AM * Tom_L wonders why there's still a dead van in BeachBumPete's driveway
08:17 AM phipli: jthornton, be glad that henry isn't a cockatoo : https://www.youtube.com/watch?v=oe1_WfX21d0
08:17 AM * BeachBumPete so do I
08:17 AM BeachBumPete: altho it IS coming back together...
08:18 AM BeachBumPete: I replaced a lot of parts under that damn hood this go around
08:18 AM BeachBumPete: I also cleaned up a LOT of gunk and crud off the top of the motor.
08:18 AM BeachBumPete: Doused the lower and upper intakes with degreaser and washed them pretty good. Looks ALMOST clean under there now.
08:18 AM BeachBumPete: tedious and time consuming shite
08:30 AM * fragalot is running a stress analysis of his CAD model but is doubting the cutting forces listed by kennametal
08:30 AM gloops: so you can do that in the software fragalot, hows it standing up?
08:31 AM fragalot: gloops: a bit too well
08:31 AM fragalot: running it now with a 10x higher load :P
08:31 AM gloops: BBP - no chance of steam cleaning?
08:46 AM fragalot: gloops: based on my simulations.. I need a bigger spindle. :D
09:04 AM gloops: excellent fragalot, any shortcomings now can only be blamed on the construction then haha
09:04 AM fragalot: :P
09:06 AM fragalot: the spindle mounting plate has a maximum deflection of 0.02mm if I apply 10x more force on it than what it would see cutting an 8mm slot into 40Hrc material in a single pass
09:06 AM fragalot: .. I think that will work.
09:08 AM gloops: should be ok yes, there isnt much else thats going to give
09:14 AM gloops: ive got a tight ballnut, seriously tempted to hammer the plate back, plate is a bit twisted...but no ill persevere again with shimming
09:51 AM BeachBumPete: gloops no dont have a steam cleaner besides it is all apart or was all apart so cleaning the individual parts is not that bad once they are off the car. Gotta get it all buttoned up here today and test fire this thing. I saw a really nice newer van for sale locally that looks nice and the price was not terrible. Thinking about trading my van in on
09:51 AM BeachBumPete: that one. Gotta go take a closer look at it here soon.
09:59 AM phipli: https://www.youtube.com/watch?v=6W_7uIapoHc
09:59 AM phipli: not a job I'd want
10:01 AM Tom_L: that's not in the US. OSHA would make him have 2 harnesses with one clipped at all times
10:02 AM phipli: its Fred - did a fair amount of TV over here
10:02 AM phipli: one of the last of the old school steeplejacks decided to tell people about it
10:03 AM phipli: he took down a lot of the old industrial chimneys
10:03 AM phipli: also liked steam engines
10:04 AM Tom_L: some of the jobs that have gone by the wayside are quite interesting for sure
10:08 AM fragalot: miss0r|office: https://ufile.io/ika9a - that should be it for now...
10:23 AM gloops: anyone know these steppers https://ibb.co/iuCPSx
10:23 AM Tom_L: simiar rating as mine
10:24 AM gloops: looks italian or something Ever electronica
10:24 AM gloops: and theyre mounted from the other end
10:25 AM Tom_L: odd
10:25 AM gloops: £26 inc post - be ok if they work
10:25 AM gloops: for 2
10:25 AM gregcnc: http://www.everelettronica.eu/
10:25 AM Tom_L: https://www.ebay.com/itm/3pcs-NEMA23-570OZ-IN-5A-3-8-DUAL-SHAFT-STEPPER-MOTOR/253223632606?_trkparms=pageci%3A466e95ed-2ac0-11e8-8243-74dbd1800614%7Cparentrq%3A39b51e141620aa479d8b3b51fff6aeb9%7Ciid%3A1&_trksid=p2481888.c100678.m3607
10:25 AM Tom_L: that's what i got
10:26 AM gloops: i looked on there gregcnc you have to be logged in to see the full specs
10:26 AM gregcnc: http://opis.cz/everelettronica/pdf/MT34FN_GB.pdf
10:26 AM gloops: i should have got those really Tom_L in fact i probably will, i just saw these and thought well, 20 odd quid, worth a shot
10:27 AM gloops: these are 4 wire, it says encoded on the site but i cant see anything that could be encoding
10:28 AM gloops: MT34FN26
10:28 AM gloops: http://www.everelettronica.eu/products/stepper-motors/itemlist/category/81-2-4-phase-hybrid-stepper-motors.html
10:29 AM gregcnc: http://www.everelettronica.eu/images/documents/datasheets/MT34FN_serie_IT.pdf
10:29 AM gloops: not sure how they are hybrid
10:29 AM phipli: quite handy : https://www.ebay.co.uk/itm/172813376462
10:29 AM phipli: inline DC barrel jack switches
10:30 AM gloops: think they will be ok then? or to put it another way, nothing to stop them working with chino drivers and so on
10:30 AM fragalot: if the drivers are rated for it, it will work fine
10:30 AM gregcnc: hybrid stepper has to do with the magnetic design of the motor
10:31 AM gloops: right so hybrid isnt referring to encoding
10:31 AM fragalot: gregcnc: that depends on if you mean actual hybrids, or the chinese interpretation of stepper with encoder bolted on
10:31 AM gloops: couple of 5 amp drivers to go then
10:31 AM gregcnc: real definition
10:31 AM gregcnc: not made up
10:32 AM Tom_L: are they skewed rotor design?
10:32 AM gregcnc: skewed steppers?
10:32 AM gloops: not sure what that is Tom_L
10:32 AM gloops: i am just waiting for the catch with them lol
10:34 AM Tom_L: the laminations in the rotor are offset
10:34 AM gregcnc: ok skewing is different
10:34 AM gloops: how does that affect the operation?
10:35 AM Tom_L: i'm not sure but i think it makes them smoother
10:35 AM gloops: ahh, well that might be a bonus
10:35 AM Tom_L: https://www.quora.com/Why-are-conductors-skewed-in-an-induction-motor
10:35 AM gregcnc: most steppers are hybrid
10:36 AM gloops: top rpm 1800 - that is a LOT more than my longs motors
10:36 AM branjb: https://imgur.com/a/YcWBj anyone know what that green steel is called that the base of this table is made out of?
10:36 AM gregcnc: unistrut
10:37 AM branjb: you a life saver
10:37 AM branjb: spent 30 min trying to find it on home depots website
10:38 AM Tom_L: gloops, i'm pretty happy with these
10:39 AM Tom_L: only running them at 2.5A so far too
10:46 AM Tom_L: gloops why do you need different steppers?
11:01 AM seb_kuzm1nsky is now known as seb_kuzminsky
11:07 AM gloops: Tom_L the x axis - although it works fine could do with a bit more grunt
11:07 AM gloops: im not going to swap anything yet, but later on ill try bigger motors
11:07 AM Tom_L: those i got come in 1/4 or 3/8" shaft
11:08 AM Tom_L: i just discovered that
11:08 AM fragalot: before, or after you bought the wrong ones?
11:08 AM Tom_L: i wouldn't change anyway
11:08 AM Tom_L: i got 3/8 shaft
11:09 AM gloops: im gathering bits and bobs for another machine as well, as and when it i see it, free or cheap
11:10 AM Tom_L: what's the next one gonna be?
11:10 AM gloops: a wood lathe/rotary axis
11:11 AM Roguish: good morning. hey, any of you guys have a controlled 4ht axis (rotary table) ?
11:12 AM gloops: plenty of people here have Roguish, whats the problem?
11:13 AM Roguish: just wondering. i find i'm loosing opportunities without one. thinking of making one. purchase non-powered, and and motor.
11:14 AM gloops: not difficult, im sure the experts will advise heh
11:14 AM Roguish: something like this: http://www.shars.com/products/workholding/rotary-machining-tables/8-horizontal-and-vertical-rotary-table-3-slots-1
11:15 AM Roguish: been looking at used units, but haven't seen any of decent value.
11:15 AM gloops: non-powered? why not control it with linuxcnc?
11:15 AM fragalot: gloops: he means buy a standard manual & slap a motor on..
11:16 AM Tom_L: he's gonna add a motor
11:16 AM Roguish: oh, absolutely. after I add the motor.
11:16 AM gloops: oh i see yes
11:16 AM Tom_L: make sure you have clearance for the motor whichever position you plan to use it in
11:17 AM gloops: well i can only comment without experience - but the way you connect motor to table is important, the gearing, and the backlash
11:17 AM Roguish: for what I see, they're all 'asian made' but of different quality.
11:18 AM Tom_L: i recently got a vise from them and am quite pleased with it
11:18 AM Roguish: from Shars?
11:19 AM Tom_L: http://www.shars.com/products/workholding/vise/4-440v-cnc-milling-machine-vise-0-0004-1
11:19 AM Roguish: i'm thinking that being a fairly large importer, they may at least have some quality control.....
11:20 AM Roguish: oh crap. windows wants to boot after updating. bbl
11:20 AM fragalot: Tom_L: https://www.youtube.com/watch?v=pZ301QEoo9Y&feature=youtu.be
11:23 AM Tom_L: no sound on this pc
11:24 AM fragalot: shame.
11:24 AM fragalot: use your imagination. :D
11:24 AM Tom_L: i did
11:37 AM IchGucksLive: hi
11:37 AM fragalot: hey IchGucksLive
11:37 AM fragalot: IchGucksLive: https://ufile.io/ika9a <- any obvious mistakes? :P
11:38 AM IchGucksLive: you do a gread job
11:38 AM fragalot: IchGucksLive: I've done a stress analysis on it, and at about 500N of cutting force, it deflects 0.02mm at it's weakest point,.. eg the spindle nose
11:38 AM fragalot: in reality, I never expect more than 50N
11:38 AM IchGucksLive: as i said with the Z to go a differend ypou did right
11:39 AM fragalot: agreed, that made all the difference :D
11:39 AM fragalot: thank you for that
11:40 AM IchGucksLive: dont clain that on me you ddi the main part on basement
11:40 AM Tom_L: mmm can't view those posts
11:40 AM Tom_L: want's me to buy time to download
11:41 AM fragalot: really?
11:41 AM fragalot: Tom_L: give me another link for a file upload service that doesn't suck
11:41 AM fragalot: it's a .pdf
11:41 AM Tom_L: ... slow download
11:41 AM fragalot: that works.. it's not a large file.
11:42 AM BeachBumPete: Well she's all in one piece again...now gotta fill er up with coolant and cross the fingers :)
11:42 AM fragalot: BeachBumPete: :)
11:42 AM IchGucksLive: fragalot: so next is a slow test on mild steel
11:43 AM IchGucksLive: with todorchial tooling
11:43 AM fragalot: IchGucksLive: next is actually building it.. :P
11:43 AM IchGucksLive: oh dident you alredy
11:43 AM IchGucksLive: no sorry it is gloops that is on testing
11:44 AM fragalot: all I've made is the bottom mold, still waiting for the epoxy to arrive so I can start to experiment
11:44 AM IchGucksLive: i hope to go in teesting on wendsday
11:44 AM IchGucksLive: with all 3 mashines
11:44 AM fragalot: and I still need to get quotes on the materials
11:44 AM IchGucksLive: all is ready only to connect the wirer from the mashine to the cabinett
11:45 AM Tom_L: IchGucksLive do you send them out with chips in the ways to show they're tested??
11:45 AM IchGucksLive: i do not send anything
11:45 AM IchGucksLive: i go to the mashine buildplace at max 100miles distance
11:45 AM Tom_L: i thought you built and sold machines
11:46 AM IchGucksLive: this is not me its the famile guy
11:46 AM IchGucksLive: https://www.sorotec.de/shop/
11:47 AM Tom_L: i see
11:48 AM IchGucksLive: and i order not from him what a shame
11:48 AM fragalot: xD
11:49 AM IchGucksLive: and he knows that i will spend nearly 30.000euros this year on parts
11:49 AM fragalot: I originally set out to build my own machine as I couldn't afford a pre-made one. looking at the prices on sorotec, compared to what i've spent/will spend.. I was wrong.
11:49 AM fragalot: lol
11:50 AM IchGucksLive: fragalot: be aware its only mainframing
11:50 AM fragalot: IchGucksLive: That, and it's a different class of machine
11:51 AM IchGucksLive: if you go the standard size it is 3k + for the frame
11:51 AM IchGucksLive: while i build complete on 1850 running
11:51 AM IchGucksLive: same size
11:52 AM fragalot: i'm at 5k now, and expect another 1.5k to go before i'm finished
11:52 AM IchGucksLive: but he sales as like frech bread at the moment
11:52 AM IchGucksLive: the upgreaders do the money maker
11:53 AM IchGucksLive: small business that own low level mashines Trapezional
11:53 AM IchGucksLive: in vest 5k
11:53 AM IchGucksLive: and thats the target not education low
11:54 AM fragalot: most businesses just want to get something that works straight away, and has good support.. they're willing to pay for that
11:54 AM fragalot: schools, in my experience, do not require either
11:54 AM IchGucksLive: fully agree
11:54 AM fragalot: if it takes some fiddling, one of the teachers or volunteer students will sovle it
11:55 AM IchGucksLive: but on 5k i woudt go for a old Deckel/Maho ...
11:55 AM IchGucksLive: a real hardware mashine
11:55 AM fragalot: that depends on what you want to do
11:56 AM Tom_L: space may be a limitation
11:56 AM fragalot: you aren't going to cut out plywood sheets on a deckel
11:56 AM IchGucksLive: the feedback is not that he likes
11:56 AM fragalot: and space & power requirements too
11:56 AM IchGucksLive: adree
11:56 AM IchGucksLive: g
11:56 AM fragalot: my limitation was space, and the fact I can't get heavy things in location
11:56 AM fragalot: so i'm building the machine in-situ and hoping I never decide to move
11:56 AM fragalot: :P
11:57 AM IchGucksLive: 95% are happy with it and never ask back
11:57 AM BeachBumPete: just ordered a new laptop battery and charger for my laptop. it SUCKS when the battery lasts only abour 20 minutes LOL
11:57 AM fragalot: BeachBumPete: that's how long they used to last with a NEW battery.
11:57 AM IchGucksLive: MS is a crap
11:57 AM BeachBumPete: yeah well this ones supposed to last awhile at least several hours.
11:58 AM fragalot: my first laptop had a battery life of "find a new socket before you unplug to move" minutes.
11:58 AM IchGucksLive: so sttay with UB
11:58 AM BeachBumPete: IKR
11:58 AM IchGucksLive: DID someone alredy start on 18.04
11:58 AM BeachBumPete: its really annoying and lately it was going downhill on me. It did not help that my charger cable was going flaky on me as well. MADDENING!!
11:58 AM IchGucksLive: we need to get ist going as soon as posible
01:12 PM fragalot: gloops: https://i.imgur.com/J1QXrBD.jpg
01:14 PM gloops: made good use of the log fragalot
01:18 PM miss0r: Who has that kind of time ?!
01:19 PM fragalot: miss0r: hopefully you. did you see my last message to miss0r|office ?
01:19 PM miss0r: I did not. I have not been in there for a while
01:19 PM gloops: i think id want to be on dayrate to make that lol
01:19 PM fragalot: as if you've got better things to do on a sunday
01:20 PM miss0r: The computer is just standing there sucking electricity :D
01:20 PM miss0r: I spend most of the day disassembling a 10 ton gear box on a huge mill ;)
01:20 PM fragalot: :D
01:20 PM fragalot: did it go well,
01:21 PM miss0r: So far. I will go back thuesday to lift the front cover off(which also holds all the feed gears). A mobile crane is comming at 10
01:22 PM miss0r: Care to elaborate what you wrote to me? (if it was important anyway) :]
01:22 PM fragalot: miss0r: https://ufile.io/oecwb
01:23 PM fragalot: wait, that's the old version
01:23 PM miss0r: :]
01:23 PM fragalot: https://ufile.io/ika9a
01:25 PM miss0r: question to your design: What the hell are you doing ? :D
01:25 PM miss0r: The solution on your z axis... Might I come with a suggestion?
01:25 PM fragalot: sure?
01:26 PM miss0r: Are you planning to use hiwin style linear rails? (square ones)
01:26 PM fragalot: yes, I have a few sets lying around & based my dimensions off of those
01:27 PM miss0r: Alright. To me it looks like you are going to mount them on outriggers, and then mount the other side to another outrigger that is then fixed to the moving part of the z,axis, correct ?
01:27 PM fragalot: yes, which serves 2 main reasons
01:27 PM fragalot: the first is that the ones I have aren't "thick" enough to clear the ballscrew
01:28 PM fragalot: the second is that this has, according to a stress analysis simulation I ran in my CAD package, improved rigidity
01:29 PM miss0r: If I were you, I would add a reiser on either side of the linear rail. To keep the orientation of the linear rail flat
01:29 PM miss0r: that will also add rigidity
01:29 PM miss0r: and you won't have to pull sideways on thoes screws
01:30 PM miss0r: just A thought anyway ;)
01:31 PM fragalot: well.. I could also make them a bit wider, and pocket them into the plates :3
01:32 PM fragalot: but that limits any adjustabillity
01:32 PM miss0r: You can always shim them
01:32 PM miss0r: I'm up for whatever. that just looks off to me
01:33 PM fragalot: adding 2 extra layers of sheet stock also seemed off when I was drawing it up
01:34 PM fragalot: & this worked fine in the simulation, deflecting only 0.02mm at the spindle nose when putting 10x higher load on it than what I can with the spindle I have :P
01:34 PM CaptHindsight: where do you mount the smoothieboard?
01:34 PM fragalot: CaptHindsight: 800x600x210 electrical panel bolts to the wall behind it
01:34 PM CaptHindsight: best used as a shim anyway
01:34 PM fragalot: lol
01:40 PM miss0r: fragalot: alright. If it works, it works :]
01:40 PM miss0r: I'll have a look at it tomorrow
01:41 PM CaptHindsight: how would you design it for DIYers?
01:42 PM CaptHindsight: so that they get is square every time?
01:42 PM CaptHindsight: is/it
01:42 PM gloops: thats part of the fun
01:42 PM Tom_L: use lots of comp
01:44 PM fragalot: CaptHindsight: make it very adjustable?
01:45 PM CaptHindsight: then again you could truck freight it anywhere in the USA with a liftgate for $500
01:45 PM CaptHindsight: already squared
01:46 PM gloops: buy a bridgeport part by part on ebay and assemble it where you need it
01:49 PM CaptHindsight: http://openbuildspartstore.com/linear-actuators/ already installed with <1mm lash and repeatability
01:50 PM CaptHindsight: https://openbuilds.com/uploadfiles/Part%20Specs/OpenBuilds%c2%ae%20Actuator%20Tests_V2.pdf
01:51 PM gloops: https://www.facebook.com/macrow.willson/videos/10215135688416402/?multi_permalinks=1893091657409230&notif_id=1521394707681244&notif_t=group_highlights
01:51 PM gloops: some made a mill for cutting stainless there, surely not solid rectangular bar..
01:52 PM Tom_L: you must log in....
01:52 PM Tom_L: blah blah blah
01:52 PM gloops: ahh yeah its facebook
01:53 PM CaptHindsight: what do you think we are?
01:53 PM CaptHindsight: even teens don't use facebook
01:53 PM Tom_L: this is as social as i care to get :)
01:54 PM gloops: you can have a fake profile just to look at the pics
01:54 PM fragalot: CaptHindsight: when you say <1mm lash, do you mean in-line with the actuator, or sideways? :P
01:55 PM roycroft: friends don't let friends use facebook
01:56 PM gloops: whats so bad about facebook?
01:57 PM roycroft: i don't have time, nor the channel patience, to get into that
01:57 PM roycroft: but for example
01:57 PM roycroft: "there is no such thing as personal privacy any more" -- mark zuckerberg
01:58 PM gloops: i was following this young woman on facebook, looks like shes finally selling a few things https://www.etsy.com/uk/listing/238944555/celtic-wood-carving-handmade-woodcarving?ref=hp_rv
01:58 PM roycroft: that's a complete disqualifier right there
01:58 PM roycroft: the idea of facebook is good
01:59 PM roycroft: the way it's worked out is singularly horrifying
01:59 PM fragalot: roycroft: it takes "you're the product" to a whole new level
01:59 PM gloops: you can have too much privacy, its not healthy for you
01:59 PM gloops: adapt to the new environment
01:59 PM roycroft: only if the new environment is a good one
01:59 PM roycroft: adapting to it just because it's new is foolish at best
02:00 PM JT-Shop: gloops: can your gantry skew a bit during homing?
02:00 PM gloops: you dont get to choose the environment
02:00 PM roycroft: i'm by no means a luddite
02:00 PM roycroft: but i'm also not a bandwagon jumper
02:00 PM gloops: JT-Shop yes got some play in
02:00 PM JT-Shop: did you design that in?
02:01 PM roycroft: facebook has blurred the line between reality and fantasy/advocacy to the point that a huge percentage of its uesrs no longer know the difference
02:01 PM roycroft: and twitter is destroying our language and ability to communicate effectively
02:01 PM gloops: ive not played with all the variations of homing, i think you can let one side find the switch, then wait for the other side
02:01 PM roycroft: i utterly reject both of those media and will not ever, under any circumstances, use either
02:02 PM gloops: JT-Shop no i tried to design it out lol, you will get some rack on a 4 foot gantry
02:02 PM roycroft: but i won't get into it any more than that, for the sake of others here
02:03 PM Rab: roycroft, one might argue that, like AOL, those services simply give voice to people whose language and communication were never great to begin with.
02:03 PM gloops: at the moment i have only got 8 out of 16 bolts in the gantry though
02:03 PM * roycroft will add the third tenant of the axis of digital evil, text messaging, to the list of things to be shunned
02:03 PM roycroft: yet another brilliant idea gone horribly wrong
02:04 PM roycroft: one might, rab, if it were not for manipulation of those media by them that control them, either by owning them, advertising on them, or hacking them
02:05 PM roycroft: the sheeple do not set the tenor - their masters do
02:05 PM gloops: if your gantry is tight, - use close movement switches, you are not talking a lot of variation from one leg to the other with a fine switch
02:05 PM Rab: roycroft, I agree on all points, but both propositions can be true.
02:05 PM roycroft: again, all three ideas are birlliant
02:05 PM roycroft: brilliant
02:05 PM roycroft: i am not poo-pooing the concecpt of facebook, twitter, or sms
02:06 PM roycroft: they just haven't turned out at all like one would want them to
02:07 PM Rab: Any thoughts on optical vs mechanical switches for homing repeatibility?
02:07 PM roycroft: but like most new technology, we as a society will likely eventually figure out how they fit in well in a beneficial way with little if any harm, and adapt them accordingly
02:07 PM fragalot: Rab: mechanical can change over time, optical is sensitive to the position of the sun, or dirt.
02:07 PM roycroft: swarf and smoke and coolant can interrupt optical paths
02:08 PM gloops: mechanical is good enough and cheap, thats all i need to know
02:08 PM Rab: Hmm, yeah.
02:08 PM CaptHindsight: I use optical and/or mechanical
02:08 PM CaptHindsight: mounting locations matter
02:08 PM fragalot: I use inductive for homing, mehcanical for endstops
02:09 PM JT-Shop: I have a nice Fugi comparator X Y table with a DRO I might look into making a router table out of it
02:09 PM CaptHindsight: I use smoke for end of life
02:14 PM gloops: good start if you have a ready XY table JT-Shop
02:18 PM JT-Shop: yea it's a bit odd shaped but has ball screws
02:27 PM gloops: if there is 0 rack and its got 2 motors, i dont think it would be an issue, you just need the switches set bang on so they both trip together, unless you could just wire 1 switch to give both joints the same signal
02:37 PM CaptHindsight: 1 gantry, 2 screws, 2 motors, 2 encoders, 2 switches
02:37 PM Tom_L: 2 much
02:39 PM CaptHindsight: how big are these gantries?
02:39 PM Tom_L: who?
02:40 PM Tom_L: guy i get parts from here used to set up room size gantrys for a canadian company
02:42 PM CaptHindsight: https://www.servotak.eu/sites/default/files/styles/w350/public/servotak_rackpinion_system_m6__3000.png
02:42 PM Tom_L: i think boeing got a few is why he ended up here
02:42 PM CaptHindsight: how about if each side of the gantry is driven by a set of these?
02:56 PM gloops: its starts getting out of hand the bigger you get with the gantry, for some diyer in the garage anyway - and this idea of making everything adjustable doesnt solve the problem, because whenever you adjust one thing you affect something else
02:57 PM gloops: and you end up chasing your tail like me lol
03:09 PM fragalot: hi
03:16 PM * Loetmichel just went to burger king buying dinner. *eating*... Maaan. 30 minutes of cleaining the snow/ice off the car to drive 10 minutes... at least i dont have to do it tomorrow moring when late (as usual) to drive to work.
03:18 PM fragalot: that's what you think :P
03:18 PM gloops: put some newspapers on the windscreen
03:19 PM fragalot: wait for it to rain
03:19 PM fragalot: and then freeze the newspaper to the car
03:19 PM fragalot: :D
03:19 PM fragalot: what's that called again? pykrete?
03:19 PM gloops: well thats what they all used to do in my day
03:19 PM gloops: and an old coat over the engine
03:20 PM Loetmichel: fragalot: pykrete is with wood chips
03:20 PM fragalot: Loetmichel: newspapers are made from wood chips, so it's still pykrete :P
03:20 PM Loetmichel: kind of ;)
03:22 PM Loetmichel: i would have liked to see a destroyer made of pykrete though. that would be a funny picture. also the look on the enemys face when the ship sheds a few 100 tons of ice on torpedo impact but drives on as if nothing happened ;)
03:23 PM gloops: you probably will see a destroyer made of pykrete, if things go on as they are
03:23 PM fragalot: mythbusters made a scale model one
03:25 PM miss0r: fragalot: The support structure for the 'bucket' is done now:D https://imgur.com/a/s96ow
03:26 PM fragalot: o.O
03:26 PM miss0r: looks spacy, right? :]
03:26 PM fragalot: I'm having a hard time mentally filling in the missing pieces :D
03:27 PM miss0r: hehe. thats where CAD comes in handy :D
03:28 PM fragalot: hard to model mesh properly :P
03:28 PM miss0r: I'm trying to decide between two ideas: one: bend a 2mm aluminum sheet, to fit inside of there. two: use 20mm nylon scraps as padding
03:28 PM Loetmichel: gloops: i doubt it. that had a reason they dropped the pykrete idea in ww2
03:28 PM miss0r: the aluminum sheet would also need some padding. I think i'll give the straps
03:28 PM miss0r: a try
03:30 PM miss0r: Also, I mostly use MasterCAM as a 2d software, so this took some brain power.. That is why I as was taking so long to do it :
03:31 PM fragalot: :P
03:32 PM fragalot: have you tried to paperCAD the rest of it ?
03:33 PM miss0r: Not realy. I've just visualized it inside my head
03:34 PM miss0r: but I think i'll go with the straps, as the aluminum sheet would probally look beat up within a few runs
03:34 PM miss0r: anywho. i'll hit the hay now. See you around
03:34 PM fragalot: cya :-)
03:37 PM gloops: http://www.thisismoney.co.uk/money/markets/article-3911126/BAE-told-use-British-steel-Navy-deal-Defence-giant-pressure-contract-eight-warships.html
03:37 PM gloops: another 8 new frigates..and subs
03:37 PM gloops: im beginning to wonder if this is whats behind the so called 'cuts'
03:37 PM nubcake is now known as nubcake_
03:38 PM nubcake_ is now known as nubcake
03:39 PM nubcake is now known as nubcake_
03:39 PM nubcake_ is now known as nubcake
03:40 PM gloops: Uk is quietly rebuilding its massive naval power - to take back the USA
03:41 PM SpeedEvil: Queen 2020.
03:41 PM SpeedEvil: (I am ambivalent on if it's the band, or the monarch.)
03:42 PM gloops: yes the benevolent mother accross the ocean is returning
03:45 PM Loetmichel: massive naval power... hihihihi... even what the americans have in "cold storage" atm would make a sea war VERY short for the brits. not to talk about the active vessels. and after the brexit there will simply not be enough steel OR workforce to do get anywhere near that power
03:45 PM JessicaRN: hey folks, will linuxcnc run a delta configuration?
03:45 PM Rab: God Save The Queen, sidvicious.jpg
03:46 PM gloops: Loetmichel we're always at our best with our backs against the wall
03:48 PM gloops: JessicaRN - like that https://pintstein.files.wordpress.com/2016/01/delta-printer-math.png?w=702
03:48 PM JessicaRN: I have this goofy idea for taking three steppers attached to spools of string and attaching the steppers on the ceiling in a equilateral triangle 10’ on a side. Then, I’ll join the ends of the string together and weight it down. My hope is that linuxcnc could convert my three string lengths to an x,y,z position.
03:49 PM JessicaRN: gloops, not quite, but similar.
03:49 PM gloops: yes linuxcnc can do that
03:50 PM JessicaRN: sweet. i'll attach a hot wire cutter to the end of the weight and use it to cut big sheets of foam insulation
03:50 PM Loetmichel: JessicaRN: iirc linuxCNC CAN do that
03:50 PM Loetmichel: no idea how though
03:51 PM Loetmichel: you are aware though that that string will be anyting but precise?
03:51 PM JessicaRN: will i need to write my own control code, or is delta a built in function?
03:51 PM gloops: there is some documentation on non trivial kinematics on the linuxcnc website, there are people in here who will give you the general idea of how to do it, im not one of them unfortunately
03:51 PM JessicaRN: Loetmichel: i'll use steel cable instead
03:52 PM Loetmichel: even with steel cable it will be pretty unstable
03:52 PM fragalot: Loetmichel: it's a wire foam cutter... "precise" isn't required most of the time for those
03:52 PM Loetmichel: especially when cutting forces come into play
03:52 PM fragalot: there is a way to make a router based plywood cnc router using 2 strings
03:52 PM gloops: i dont think its a brilliant idea either
03:52 PM fragalot: and if that can work, a wire cutter will work fine
03:52 PM JessicaRN: if i have 1mm precision, thats good enuf
03:53 PM fragalot: hell, my old roland used steel cables exclusively for it's motion
03:53 PM gloops: you would need a heavy plate to maintain tension and resist lifting
03:53 PM JessicaRN: gloops: yeah, thus the weights
03:54 PM gloops: cable is very strong in the right application
03:55 PM Tom_L: stretches too
03:55 PM fragalot: doubt that would be an issue for a foam cutter
03:55 PM gloops: in this you have no pushing forces or holding beams or anything, its all tension
03:55 PM Tom_L: probably not
03:55 PM fragalot: if the wire temperature can be controleld right, the cutting forces should be negligible
03:55 PM JessicaRN: once it settles it should be dimensionally stable
03:57 PM gloops: ok
03:57 PM JessicaRN: i'm hoping this will let me make a cheap, large foam cutter to handle 4'x8' sheets
03:57 PM gloops: why have you chosen this design Jessica - what are the advantages over say - and xyz gantry machine
03:58 PM JessicaRN: no gantry, to start with.
03:58 PM JessicaRN: no frame at all.
03:58 PM JessicaRN: it just hangs from the ceiling
03:58 PM Loetmichel: JessicaRN: there are designs that do it with two wires/strings on each side and a really large foam cutting "bow" in between
03:58 PM Loetmichel: and then the sheet "standing up"
03:58 PM gloops: ok thats one advantage yes
03:59 PM JessicaRN: do you have a writeup?
03:59 PM JessicaRN: Loetmichel:
03:59 PM Loetmichel: searchein, moment
03:59 PM JessicaRN: ty
03:59 PM JessicaRN: i do like the core x-y layout
03:59 PM JessicaRN: that's a cool solution
03:59 PM Loetmichel: http://www.cnc-hotwire.de/
03:59 PM Loetmichel: german, sorry
04:00 PM JessicaRN: i just thought this delta config might be super easy
04:01 PM fragalot: JessicaRN: it would be slow though
04:01 PM JessicaRN: why?
04:01 PM fragalot: since you are essentially swinging around a weight on a string
04:01 PM fragalot: and inertia is a thing
04:01 PM Loetmichel: that
04:01 PM Loetmichel: it DOES work though
04:01 PM gloops: thats ok for making surfboards
04:01 PM Loetmichel: if you have time ;)
04:01 PM fragalot: yup
04:02 PM fragalot: cheap, functional, slow. :)
04:02 PM fragalot: nothing lost by trying in any case
04:02 PM Loetmichel: JessicaRN: got the link?
04:03 PM JessicaRN: yeah, germans always put a rock soundtrack on their videos....
04:03 PM JessicaRN: cool design
04:04 PM JessicaRN: i think I'll give the delta a try. might be a fun, simple build
04:05 PM gloops: id screw some ally or timber to the ceiling, fit some sbr rails to it, have a gantry hanging down - you could hinge the gantry so it folded up to the ceiling, make it with wood, will be stiff enough for foam cutting
04:05 PM fragalot: JessicaRN: out of curiosity, how do you "home" it?
04:05 PM gloops: the pod needs extending rods or beams imo, not cables
04:06 PM JessicaRN: fragalot: where it starts, thats home! (low tech!)
04:06 PM fragalot: JessicaRN: That works! :D
04:07 PM JessicaRN: A gantry is nice for things that have resistance, but this should be like a hot knife thru butter.
04:08 PM gloops: well, it would be good to see a new idea made and working
04:08 PM Tom_L: wire cutter?
04:08 PM Tom_L: you still get sag if you go too fast
04:08 PM JessicaRN: hot wire cutter
04:09 PM fragalot: Tom_L: moar heat!
04:09 PM Tom_L: will burn the wire
04:09 PM fragalot: moar wire
04:09 PM JessicaRN: the hot wire will hang from the inverted apex of the config, and be weighted at the bottom. If it stretches, it will do so straight down
04:10 PM gloops: so you are only slicing vertically?
04:10 PM JessicaRN: I'll use a heating element from a 110v heater.
04:10 PM fragalot: gloops: hard to do anything else with only 3 wires :P
04:10 PM JessicaRN: gloops: , yeah
04:11 PM jdh: are you making small surfboards?
04:11 PM JessicaRN: no, big foam letters
04:11 PM JessicaRN: like for a sign
04:13 PM JessicaRN: though, i bet I could hang a soldering iron off of it and carve 3d shapes...
04:13 PM Tom_L: or burn the house down
04:13 PM gloops: lol
04:13 PM JessicaRN: Tom_L: so, you want to live forever?
04:14 PM Tom_L: the plan is to live out ALL my natural born days
04:14 PM gloops: IchsGucksLive does some foam cutting work, he'll tell you how to make a cheap cutter , if you dont know
04:14 PM gloops: he made a 4 axis that works ok..ish
04:14 PM JessicaRN: I'm an er nurse.... I wanna go out with a bang. don't leave them anythig to work on...
04:15 PM JessicaRN: does ichs have a webpage?
04:15 PM Tom_L: he has a youtube channel
04:16 PM JessicaRN: no results found
04:16 PM gloops: look at Ichs wire cutter - https://www.youtube.com/watch?v=Xv7X6-E3wjY
04:16 PM gloops: magic cnc maschines
04:16 PM JessicaRN: ty
04:17 PM BeachBumPete: IT'S ALIIIIIIVVVVVVVVEEEEEEEEEE!!!! ITS ALIIIIIIIVVVVVVVVVVVEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
04:17 PM jdh: teh van?
04:17 PM BeachBumPete: yup
04:17 PM jdh: congrats. maybe
04:17 PM jdh: I have two pdp11's at work I keep running. it is good, or a curse.
04:18 PM JessicaRN: nice machine
04:18 PM gloops: its only made with bits of wood
04:18 PM gloops: well, the rotary axis
04:26 PM JessicaRN: interesting video
04:26 PM JessicaRN: i'm gonna give the delta a go. who knows? it will be a very cheap build
04:26 PM JessicaRN: will linuxcnc drive a usb>parallel port? or do I need a dedicated parallel port? I'm gonna run this off either a rasp pi or my laptop.
04:26 PM Loetmichel: JessicaRN: usb->parallel is a nogo
04:26 PM JessicaRN: what about the gpio on a rpi?
04:26 PM Loetmichel: you'll need a PCI pr PCI-E parallel card that can emulate an ISA card on the same i/o
04:26 PM Loetmichel: or a dedicated CNC card like the mesa ones
04:26 PM * roycroft got rid of his last pdp-11 a while back, along with his vaxstation, but still has some ss20s in the attic
04:26 PM gloops: BeachBumPete what was wrong with the van?
04:27 PM Loetmichel: IIRC there is a version of LinuxCNC that runs on Rpi
04:27 PM cpresser: rpi is theoretical possible, but not so easy. afaik a beaglebone can do machinekit, which is a linuxcnc fortk
04:27 PM Loetmichel: but i never tested it, having no pi
04:28 PM JessicaRN: is it just slow thruput via usb?
04:28 PM Loetmichel: nope. it doesent work
04:28 PM fragalot: it doesn't work for linuxcnc*
04:28 PM Loetmichel: the usb converters doesnt have the "bit bang" modes that are needed
04:28 PM Loetmichel: you cant adress single bits with it
04:29 PM gloops: probably most common way is an old desktop with parport, no need to spend more than $30
04:29 PM JessicaRN: https://www.youtube.com/watch?v=5WsugS7hTLk
04:30 PM JessicaRN: i had an old pc that was running mach3. the dang caps all swelled...
04:31 PM JessicaRN: heres a guy who says hes got 6 axis running on rpi w/ linuxcnc
04:31 PM JessicaRN: https://www.youtube.com/watch?v=vNkgUlXdiHE
04:34 PM gloops: well, the simple design is becoming more complicated
04:35 PM JessicaRN: yeah, they do that don't they?
04:35 PM JessicaRN: i'll prolly just buy a cheap mb
04:37 PM gloops: what do you predict will be the biggest problem with building this machine?
04:37 PM JessicaRN: https://www.newegg.com/Product/Product.aspx?Item=N82E16813157338&ignorebbr=1&nm_mc=KNC-GoogleAdwords-PC&cm_mmc=KNC-GoogleAdwords-PC-_-pla-_-Motherboards+-+Intel-_-N82E16813157338&gclid=EAIaIQobChMI1sS7sen22QIVx7rACh14tQ-6EAQYASABEgK8x_D_BwE&gclsrc=aw.ds
04:37 PM JessicaRN: maybe this mb
04:38 PM JessicaRN: biggest prob? I'll put a lot of time into it and it wont work!
04:39 PM gloops: the cable will need spooling properly
04:39 PM JessicaRN: I'll gear it down. I can cut those parts on a laser
04:39 PM Loetmichel: hmm, that doesent sound all that "smooth" with 6 axes already
04:40 PM Loetmichel: that rpi guy video
04:40 PM JessicaRN: yeah. too many headaches. I'll just use a mb
04:41 PM Loetmichel: JessicaRN: if you have a mobo/pc that still has a PCI port: there are very cheap PCI LPT port cards out there
04:41 PM Loetmichel: that work perfectly with LinuxCNC
04:41 PM Loetmichel: even some PCIE cards work
04:41 PM JessicaRN: yeah. sounds like the way to go. if i get this up and running I'll post it for you all
04:41 PM Loetmichel: so maybe just buy a new card instead of a new PC
04:41 PM JessicaRN: thanks for the tips! I'm off to dinner.
04:42 PM JessicaRN: ttys
04:43 PM gloops: you cant just let the cable wind randomly on top of itself, it will make greater and smaller diameters - changing the gearing, affecting the distance pull by 1 step
04:46 PM jdh: does rPi run linuxcnc or someones fork?
04:53 PM BeachBumPete: gloops had to replace lower intake manifold gaskets
05:19 PM gloops: interesting little job for you BeachBumPete lol
05:45 PM Tom_L: BeachBumPete no leaks?
05:48 PM Deejay: gn8
06:04 PM BeachBumPete: bot so far
06:04 PM BeachBumPete: not
06:06 PM BeachBumPete: just took the wife down to our favorite restaurant for some delicious take out bacon cheeseburgers called the West End Grill. We sat out in the parking lot waiting for our food to be cooked in the van with the AC on and it never got warm, nothing leaked out from underneath it, maybe 20 minutes or so just talking. She cleaned the entire inside of m
06:06 PM BeachBumPete: y van and even shampooed the carpets while I was reassembling everything so it is real nice inside again.
06:07 PM BeachBumPete: it sure is nice to have my vehicle back running. we were watching Star Wars on the DVD player in there ;)
06:12 PM jdh: chevy van with shag carpet and a bed in teh back?
06:12 PM BeachBumPete: chevy van... and no
06:12 PM BeachBumPete: I love vans man even tho they are a beotch to work on
06:14 PM jdh: http://i167.photobucket.com/albums/u128/sapphias20/molestervan.png
06:15 PM jdh: it was a beautiful morning down south from you
06:16 PM BeachBumPete: https://i.imgur.com/9t1SRUa.jpg
06:16 PM BeachBumPete: more like it
06:16 PM BeachBumPete: you still there?\
06:20 PM jdh: nope, I'm now in historic High SPings Florida
06:20 PM jdh: Springs
06:20 PM jdh: but, I am eating the slice of Key Lime Pie I got last night down there,
06:21 PM gloops: Putin wins 76% of the vote, quite a low majority for Russia the soviets used to get 99%
06:21 PM BeachBumPete: at the key lime house no doubt
06:21 PM jdh: yep
09:06 PM elbartek: hello!
09:06 PM elbartek: I am currently looking for a 0.5-4hp spindle motor... used but in good condition... with collet for tool holding
09:06 PM elbartek: any experience with perske motors here?
09:06 PM elbartek: any idea where I can look for used motors, other than ebay?
09:07 PM CaptHindsight: not for used
09:07 PM CaptHindsight: lots of used deals on ebay
09:08 PM elbartek: is it expensive to rebuild a motor like that?
09:08 PM elbartek: in case....
09:09 PM elbartek: and the perske I found don't use the usual ER collets...
09:09 PM CaptHindsight: you can get a whole 2.2kw spindle motor with VFD for $350
09:09 PM elbartek: yes ,... chinese crap? with huge runout???
09:10 PM elbartek: with false specs
09:10 PM elbartek: plus a crappy protocol to play with the VFD
09:10 PM elbartek: and lack of documentation... in chinglish
09:10 PM CaptHindsight: yeah, it depends on the source
09:11 PM CaptHindsight: often they use Chinese Watts
09:11 PM elbartek: I found a good perske motor 18k rpm, 0.7kw, EOC collet... seems like new... at 400$ ...
09:11 PM elbartek: yeah... chinese watts = 0.1 american watts lol
09:11 PM elbartek: I just need some input with someone who had any exp with them
09:12 PM elbartek: what would be a good source for chinese motor?? I got a nice Delta VFD 1.5KW
09:12 PM elbartek: ive seen two-3 alternate chinese types...
09:13 PM elbartek: one that claims it has NSK bearings
09:13 PM CaptHindsight: look for used band name motors that you like
09:13 PM elbartek: yeah... perske sell at >1000$ on ebay usually... teknomotor same
09:13 PM elbartek: the chinese motor of the same claimed power and good claimed runout... 200$ ....
09:14 PM elbartek: but I think it is just throwing my money away
09:14 PM CaptHindsight: you can't trust the specs
09:14 PM CaptHindsight: you have to go by experience with the vendor
09:15 PM elbartek: I was hoping someone had a good source here...
09:15 PM CaptHindsight: I usually find good deals on ebay
09:15 PM CaptHindsight: or I buy new
10:02 PM enleth: elbartek: Kress?
10:06 PM elbartek: yes what about Kress? Ive seen they got good runouts
10:06 PM enleth: well, look for those on eBay, I guess
10:06 PM elbartek: the 1050 is about 400$ anyways... and shipped from Germany
10:07 PM enleth: I've never used them personally but heard a lot of positive stuff, if what you need is a high-RPM woodworking spindle
10:07 PM elbartek: Id prefer a Perske, teknomotor or Giordano spindle...
10:08 PM elbartek: I can buy a 4.5hp Giordano in good working order for about 450$ on Kijiji here.... however...
10:08 PM elbartek: it runs on 380v 3 phase.... duh
10:08 PM elbartek: found nice vfds that output 220v 3ph from my 220v 1ph.... but 1.5KW
10:09 PM elbartek: I wonder how that motor could run on these... just lower torque?
10:10 PM elbartek: I mean the specs of the motor say 4.5HP, will it overheat or something running it from lower voltage 1.5KW vfd?
10:10 PM elbartek: it has passive fan..
10:11 PM elbartek: same price for a Perske at 0.7KW 165V... that would run full spin on my VFD.... but hey thats way lower power...
10:11 PM elbartek: I really dont want a chinese spindle lol
11:34 PM elbartek: got a question... can I adapt a keyed shaft to a tool holder (collet) ???