#linuxcnc Logs
Oct 29 2017
#linuxcnc Calendar
12:50 AM XXCoder: bread me up. https://i.pinimg.com/originals/b3/64/a0/b364a0ed64242d8ccf3720a08096efd7.jpg
12:52 AM XXCoder: btw do not actually feed bread to ducks.
01:07 AM RyanS1: well, thats the first step, i'm on a fresh install of mint 18.2 right now
01:07 AM XXCoder: yayy
01:07 AM RyanS1: easy bit
01:11 AM XXCoder: setting up linuxcnc machine?
01:16 AM RyanS1: yep, plasma. havent built it yet, but getting the computer ready
01:17 AM XXCoder: nice
01:17 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_base_XAxis3.jpg
01:28 AM RyanS1: what could i use to control this pc from my smartphone? vnc or something?
01:29 AM MarcelineVQ: Tom_L: that's looking like a mill
01:30 AM MarcelineVQ: at this rate the next revision's gonna have a cast pillar :>
01:32 AM Tom_L: i'll save that for tomorrow
02:07 AM IchGucksLive: morning from germany
02:07 AM gloops: howdy
02:07 AM XXCoder: hey from tacoma
02:07 AM IchGucksLive: ;-)
02:07 AM IchGucksLive: RyanS1: still online
02:09 AM IchGucksLive: miss0r: how is it up there in the storm
02:09 AM gloops: going to have alook round the car boot sale, never know what interesting bits turn up
02:10 AM RyanS1: im the linux ryan
02:10 AM miss0r: IchGucksLive: Where I live, it hasn't been bad. I don't even see a broken branch in the garden
02:10 AM miss0r: IchGucksLive: Arent you supposed to get it today?
02:11 AM IchGucksLive: RyanS1: for plasma i use the xh-hb04 controll it is a cool thing no pc needed at the lasma itself
02:11 AM IchGucksLive: RyanS1 plasma is about 20feet away from pc
02:12 AM IchGucksLive: RyanS1 all controlled by xh
02:13 AM IchGucksLive: miss0r: all red alert outside gusts ini real force
02:14 AM miss0r: I looked at the http://www.meteoalarm.eu/ .. looks like you are getting a 'beating' :]
02:15 AM IchGucksLive: http://www.unwetterzentrale.de/uwz/
02:15 AM miss0r: looking good.... is it bad then?
02:16 AM IchGucksLive: we will see till afternoon
02:16 AM IchGucksLive: im off later
02:20 AM gloops: https://www.facebook.com/photo.php?fbid=368637200262065&set=gm.1747759241942473&type=3&theater
02:21 AM archivist: must log in to see
02:21 AM XXCoder: not aviliable
02:22 AM gloops: https://scontent.fman2-1.fna.fbcdn.net/v/t1.0-9/22894491_368637200262065_89246885519726307_n.jpg?
02:22 AM gloops: no that neither
02:22 AM gloops: https://scontent.fman2-1.fna.fbcdn.net/v/t1.0-9/22894491_368637200262065_89246885519726307_n.jpg?oh=19974f4c367aeb94e52266a92a0824a9&oe=5A743E1A
02:23 AM MarcelineVQ: rise my monster, RISEEEE
02:23 AM gloops: haha
02:23 AM XXCoder: get a real picture server, like picpaste
02:23 AM gloops: i might borrow that line
02:23 AM gloops: its something someone posted on facebook
02:23 AM archivist: somewhat fugly
02:24 AM gloops: its better than the last attempt, they all laughed at his first 5 axis - so he rebuilt, in 1 day
02:25 AM archivist: my fugly 5 axis took longer than a day, might I recommend not rushing the job
02:26 AM gloops: think he might be just having a laugh, i dunno the first had a LOT of work in it
02:26 AM archivist: certain basics like the steppers inline with screws!
02:27 AM archivist: I have seen that sort of misadventure in a university exam, some dont have the spacial ability
02:27 AM gloops: hes just held all that up peice by peice and acked it together
02:29 AM archivist: we had to make a balsa crane at the OU, to hold as much weight as possible, clear a certain height and overhang, one dork made a floating crane!!!
02:30 AM XXCoder: how much could that floating crane lift
02:30 AM archivist: eff all it failed far lower than anyone else's
02:31 AM gloops: quite a lot when the lightning hits the conducting rod
02:31 AM XXCoder: creative is great and all as long as it meets the requirement heh
02:31 AM archivist: we just had to deal with the weight rather that actually lift
02:32 AM gloops: i suppoe ok for trialling 5 axis softwire and control wise
02:33 AM archivist: I remember my school woodwork exam was similar, made my spice rack, then looked around at half finished and holes in wrong places
02:33 AM archivist: it is a missing "minds eye"
02:33 AM XXCoder: enjoy https://www.youtube.com/watch?v=zKPhjkw3Y84
02:35 AM RyanS1: why is 4.9.59 dated later than 4.9.9 ?? https://www.kernel.org/pub/linux/kernel/v4.x/
02:35 AM XXCoder: 59 is higher than 9
02:35 AM MarcelineVQ: 59 is larger than 9 dear
02:37 AM gloops_: connection is dodgy lately
02:37 AM RyanS1: huh
02:37 AM MarcelineVQ: this video is terror
02:37 AM XXCoder: heh its more tame than some of other videos heh
02:37 AM MarcelineVQ: it loses all of it's scope when all the camera angles are skyward though
02:37 AM MarcelineVQ: kinda defeats its suppose point oh well
02:38 AM gloops_: 3 million views
02:39 AM XXCoder: MarcelineVQ: https://www.youtube.com/watch?v=-0Xa4bHcJu8 my favorite. it starts normal-ish then...
02:39 AM MarcelineVQ: https://www.youtube.com/channel/UCO7fujFV_MuxTM0TuZrnE6Q is nice, weird but good music so it's fine
02:40 AM archivist: gloops_, bearings arrived Fri
02:40 AM archivist: all but two boxes sealed
02:40 AM MarcelineVQ: not really into this weebl style animations
02:40 AM gloops_: good buy there archivist id say, any plans for them?
02:40 AM RyanS1: righgt for some reeason im thinking 4.9.5.9
02:41 AM archivist: gloops_, dunno yet
02:41 AM archivist: must get some bar now
02:41 AM MarcelineVQ: lexical ordering of items causes that confusion, where it'll put 4.9.6 lower down than 4.9.45
02:42 AM gloops_: archivist what size were they again 12mm?
02:42 AM XXCoder: not really. its just 3 values not one
02:42 AM archivist: yes 12mm
02:42 AM XXCoder: major.minor.revision
02:43 AM gloops_: archivist - laser
02:45 AM gloops_: ive decided with my bearings to make a shim to fit between them, slightly bigger on the inner race than the outer, tighten up a touch, spring washers that size are ridiculously expensive for what they are
02:45 AM gloops_: or if i spot anything, a compression spring or something that size i might use a section of that
02:46 AM archivist: one of my measuring machines uses bar supports
02:47 AM gloops_: ahh yeah would be good for anything like that, lots of things
02:47 AM archivist: http://www.collection.archivist.info/archive/DJCPD/PD/2015/2015_04_19_Citizen/IMG_1879.JPG
02:49 AM gloops_: actually the shim idea wont work..
02:50 AM gloops_: thats binding inner and outer
02:50 AM gloops_: would need two independent shims
02:50 AM gloops_: or just one thing one for the inner race
02:50 AM gloops_: thin
02:53 AM archivist: two tubes, adjust length of one to it has the right fit
02:53 AM gloops_: yes something like that, quite limited space on the shaft
02:54 AM archivist: other bar device but it has kinematic bearings http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_09_03_travelling_microscope/IMG_1658.JPG
02:54 AM gloops_: thats better though, a tube pressed on to the inner shaft and another inside the outer
02:56 AM gloops_: fine instruments
02:57 AM gloops_: they sell the bar one the laser/printer pages
04:02 AM RyanS1: there isnt a Fully Preemptable Kernel" option
04:07 AM archivist: you have to add it as far as I know
04:07 AM archivist: far easier to use the download :)
04:10 AM Deejay: moin
04:14 AM RyanS1: i need 2.8
04:21 AM archivist: you need to do whatever is needed to get a realtime kernel on your os or use the download, then upgrade to 2.8
04:22 AM archivist: http://linuxcnc.org/docs/2.7/html/getting-started/getting-linuxcnc.html
04:23 AM archivist: ask jt when he wakes up about mint
04:23 AM RyanS1: ok
05:16 AM jthornton: morning
05:16 AM XXCoder: yo
05:19 AM jthornton: only 30F this morning
05:19 AM XXCoder: fog is coming in here
05:23 AM Deejay: yo
05:25 AM XXCoder: hey
05:36 AM gloops: topic for anyone who is bored - what problems does higher speed motion cause re latency/software
05:38 AM gloops: or, we know it does cause problems, but what is causing it
05:49 AM RyanS1: jt; any reason Fully Preemptable Kernel option isnt listed in xconfiig? im followwing the mint how-to
05:50 AM jthornton: I just do ctrl f and search for preempt
05:56 AM RyanS1: no results unfortunately
05:56 AM jthornton: what version?
05:57 AM RyanS1: 4.9.47
05:57 AM jthornton: I'm using SMP PREEMPT Debian 3.4.55-4 on this pc
06:15 AM RyanS1: try an earlierr v?
06:17 AM jthornton: yea newer ones may not have preempt
06:18 AM IchGucksLive: hi
06:18 AM IchGucksLive: RyanS1 why are you going for 2.8
06:19 AM IchGucksLive: no need on plasma
06:19 AM IchGucksLive: since 2.3.5 plasma will run perfect
06:20 AM IchGucksLive: for ganty homing on plasma that act no way
06:21 AM * jthornton has 3 days to use up 5.2GB of data usage on the internet
06:21 AM XXCoder: quick, download hours of porn
06:21 AM IchGucksLive: downloa the new dvd
06:21 AM IchGucksLive: XXCoder: on my age why
06:22 AM XXCoder: IchGucksLive: that was to jthornton, much younger and vigious man than you I'd wager lol
06:22 AM IchGucksLive: i think ryana is not gone talk to me
06:24 AM jthornton: lol
06:24 AM jthornton: he may be downloading some different kernels
06:24 AM jthornton: XXCoder: how old do you think I am?
06:24 AM IchGucksLive: jthornton: also it is always good to have a Win10 dvd
06:25 AM IchGucksLive: jthornton: what does this volum cost you every month
06:25 AM IchGucksLive: 24month contract i guess
06:26 AM jthornton: why would anyone want a win10dvd?
06:27 AM jthornton: my sat internet costs $50 a month for 10GB
06:27 AM XXCoder: no better options?
06:29 AM jthornton: nope, only other option is hugesnet and it's not better
06:30 AM XXCoder: im wondering how good hdmi antentta shows is
06:31 AM IchGucksLive: im off noon
06:31 AM XXCoder: on unrelated tangent
06:31 AM XXCoder: someone recommanded me to get ulf tuner to convert rca to coaxial
06:31 AM XXCoder: but im not finding one that cna
06:31 AM XXCoder: can
06:33 AM XXCoder: err looks like coax in rca out
06:33 AM malcom2073: You want a tuner
06:33 AM MarcelineVQ: I used to have one of those hooked up to my super nintendo
06:33 AM XXCoder: hold on a second
06:33 AM malcom2073: coax can carry a wide variety of channels, RCA only one, so you need something to pick which channel
06:33 AM XXCoder: I have rf modulator here
06:34 AM XXCoder: so I need opposite that which is ulf tuner yeah I think
06:34 AM RyanS1: oops
06:35 AM malcom2073: XXCoder: digital or analog? You're trying to get tv over the air?
06:35 AM XXCoder: mal well issue is that my caption machine is ancient
06:35 AM malcom2073: The government was giving those out after the digital roll out a while back
06:35 AM XXCoder: projector dont have modern caption chip
06:36 AM XXCoder: so I need to hop over rca to coaxial, caption, then back from coaxial to rca
06:36 AM XXCoder: i found one I thinjk and its 89 bucks lol
06:36 AM XXCoder: https://www.amazon.com/Analog-Composite-Output-America-Region/dp/B0191AYTHO/
06:36 AM MarcelineVQ: that seems excessive
06:37 AM XXCoder: yeah
06:42 AM XXCoder: umm https://www.amazon.com/Digital-Broadcast-Receiver-EPG-Recording/dp/B06X6DZ3C7/
06:42 AM XXCoder: still bit excessive but cheaper
06:47 AM XXCoder: https://www.amazon.com/Premium-Clear-Tuner-Recording-Outputs/dp/B01L9EKNPW/ similiar price
06:52 AM XXCoder: MarcelineVQ: okay got question with one I just found https://www.amazon.com/dp/B012H1P0MM/
06:52 AM XXCoder: it says rf in and have rca and coaxial out
06:52 AM XXCoder: isnt rf and coax same
06:54 AM MarcelineVQ: I imagine, but don't know, that it's the same cable but different things needed to interperet the signal
06:54 AM MarcelineVQ: which is to say, both coax, but 'radio' vs 'cable' is likely different, I really don't know however
06:54 AM XXCoder: yeah
06:55 AM XXCoder: its annoying how diffult coaxal to rca is
06:56 AM MarcelineVQ: is that specifically what you're after? tv cable to rca?
06:56 AM XXCoder: yeah since old caption box has only coaxial
06:59 AM XXCoder: found $20 one. bomb reviews tho lol
06:59 AM MarcelineVQ: it doesn't help that there's a couple kinds of coaxial, including one that just looks like an rca plug already, yours is for sure the screw-on tv kind?
07:00 AM XXCoder: yeah
07:02 AM MarcelineVQ: guides seem to reccomend doing a passthrough on an a vcr
07:02 AM XXCoder: indeed
07:02 AM MarcelineVQ: that actually sounds like a really good route if you can find out
07:02 AM MarcelineVQ: *find one
07:02 AM XXCoder: in least vcr is pretty easy
07:03 AM XXCoder: vcr with rca in and coaxial out was very hard lol and one I had died
07:03 AM XXCoder: i just want smaller packages :P lol
07:06 AM XXCoder: looks like vcr is still best option for coaxial to rca ugh
07:06 AM _methods: what inputs does your projector have?
07:07 AM XXCoder: rca
07:07 AM _methods: wow
07:07 AM _methods: do you have a stereo tuner?
07:07 AM XXCoder: no
07:08 AM _methods: what's your budget for this?
07:08 AM XXCoder: not too sure yet though wow late now nights
07:08 AM _methods: https://www.amazon.com/HDMI-video-audio-composite-Converter/dp/B074MYDKKJ/ref=sr_1_1_sspa?ie=UTF8&qid=1509277024&sr=8-1-spons&keywords=hdmi+to+rca&psc=1&smid=A3O97C8TVR7PJJ
07:09 AM _methods: try something like that then hdmi into it with a firestick or something like that
07:09 AM XXCoder: nice. too bad ye olde captioning machine dont have hdmi :)
07:09 AM XXCoder: i might change direction of this though if I can find better way to do captioning.
07:09 AM XXCoder: nights and thanks
07:09 AM MarcelineVQ: bai
07:10 AM MarcelineVQ: sec
07:10 AM _methods: run all your tv and media thru an hdmi device
07:10 AM MarcelineVQ: you shoud make up a little diagram of the devices and connectionsd avaialbel between them
07:10 AM MarcelineVQ: could narrow things down quite a bit
07:10 AM _methods: google tv, firestick, android tv, apple tv
07:10 AM _methods: you have quite a few hdmi options that allow for captioning
07:25 AM andypugh: XXCoder: Arduino and 4x20 LCD display. (actually, whatever the question, that seems to be the answer)
08:25 AM malcom2073: Arduino is always the answer
08:38 AM Tom_L: 31°F .. warming up already
10:29 AM gloops: right, got enough box section to build my 4x3
10:33 AM gloops: £40 https://www.ebay.co.uk/itm/40-X40-Steel-Box-Section/272896186131?
10:34 AM MarcelineVQ: 15 lengths? how long is a length?
10:34 AM Tom_L: gloops you see my latest rendition of mill?
10:34 AM Tom_L: MarcelineVQ the length of a string
10:34 AM gloops: not seen it Tom no
10:35 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_base_XAxis3.jpg
10:35 AM gloops: Marcel 6-7ft lengths
10:35 AM gloops: the brace should help Tom
10:35 AM MarcelineVQ: you got 100' of steel tubing for 40 quid?
10:36 AM Tom_L: his stuff is aluminum
10:36 AM gloops: yep in my garage now
10:36 AM Tom_L: i think
10:36 AM MarcelineVQ: good lord
10:36 AM Tom_L: steel? really?
10:36 AM gloops: will build it all
10:37 AM Tom_L: what wall thickness?
10:37 AM Tom_L: that stuff is pretty bendy
10:37 AM gloops: 3mm
10:38 AM gloops: im going to fill the axis sections with aluminium, so should be rigid enough - can also tap that for the rails
10:38 AM gloops: although a touch on the heavy side
10:39 AM gloops: or should i say im going to see what happens when i fill a rail with aluminium first
11:08 AM Sabotend_ is now known as Sabotender
11:09 AM gloops: 2x425oz motors on the X, 1 on the Y, driving rotating ballnuts on 1605 screws, pulley ratio 1-3, this should/could give rapids of 600 ipm+, cutting speeds unknown, but anything in the 250ipm range would be good, smaller pulley and belt set for heavier cutting
11:15 AM MarcelineVQ: what will you do with all that power?
11:15 AM gloops: not a lot of power really, i can stop those motors with my hand
11:15 AM gloops: but - cut wood lol
11:16 AM gloops: hopefully inexpensive peices of wood into expensive forms
12:03 PM Tom_L: JT-Shop your plasma is belt drive right?
12:03 PM Tom_L: what belt / pulley series did you use?
12:57 PM archivist: andypugh, I got a comment off someone in another chan about your thread table, missing m2 :)
01:22 PM JT-Shop: Tom_L: yes
01:30 PM JT-Shop: 3/8w XL on the Y and 1/2"w L on the X axis... wish I could have found some HTD series belt in cut to length a much better belt
01:45 PM Tom_L: just need something for the ballscrews to steppers
01:45 PM Tom_L: 10mm and .375" probably 3:1 or 4:1 ratio
01:45 PM Tom_L: .375 stepper shaft
01:46 PM archivist: oldham coupling
01:47 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/new_pulleys/new_pulley_mounted2.jpg
01:47 PM Tom_L: that series would probably do if i can find the right sizes
01:47 PM archivist: one can bore/ream
01:47 PM Tom_L: i did on those
01:48 PM archivist: but the nice thing is buying different ends to interface sizes, I also make rings to step down
02:15 PM Vitran: Oh I am flipping pissed at Hardinge right now. The wiring diagram for the encoders. White is 0V and black is +5V. Who the hell makes DC circuits with black as + and white as -
02:15 PM pcw_home: black wires matter
02:15 PM archivist: american companies
02:16 PM Vitran: Other thing I noticed. Across 4 encoders, the resistance across the power going into them is 3.8 ohms. At 5V, that is a lot of current for an encoder, no?
02:17 PM pcw_home: incandescent lights?
02:17 PM archivist: if old then you are measuring incandescent bulbs
02:17 PM Vitran: No idea. The machine was made in 88
02:17 PM archivist: resistance rises when hot/alight
02:18 PM Vitran: neat
02:18 PM pcw_home: 1988 I would expect infrared LEDs but who knows
02:38 PM JT-Shop: Tom_L: I'd use HTD belts for that https://www.mcmaster.com/#timing-belts/=1a0xbl9
02:59 PM gloops: this is good stuff https://www.ebay.co.uk/itm/Acetal-Off-Cuts-White/122761651437?
03:02 PM Tom_L: JT-Shop does mcmaster have a belt length calculator?
03:12 PM Vitran: I'm getting confused here. On the 7i64, there is a +out and a -out. If I am sourcing power (sending out 24VDC), I connect 24VDC to the -out line and the wire to the machine is on the +out line.
03:12 PM Tom_L: JT-Shop, how many teeth are on your small pulley?
03:12 PM Vitran: So for a sinking, I put 0V on the +out line and the line to the machine goes on the -out?
03:18 PM andypugh: archivist: Yes, I don’t know why I stopped at M3. There are many smaller ones. Down to M0.3
03:19 PM andypugh: Vitran: Back in the old days (in the US) neutral was undyed gutta-percha and live was gutta-percha with a marker, and the marker was carbon black.
03:24 PM pcw_home: Vitran:
03:24 PM pcw_home: for sourcing +24 goes to out+ out- goes to load (other side of load goes to common)
03:24 PM pcw_home: for sinking out+ goes to load out- goes to common and other side or load goes to +24V
03:26 PM andypugh: In the UK we used to have red for live, black neutral. Then it went to brown live and blue neutral. Three-and earth for two-way circuits was red.yellow live and blue neutral. But that has harmonised to brown/black live and grey neutral. Which means that black can be live or neutral depending on the age of the installation. http://electrical.theiet.org/wiring-regulations/cable-colours/flyer.cfm?type=pdf
03:26 PM andypugh: I always wire in pink. Nobody assumes anything about pink wires.
03:27 PM Vitran: pcw_home: thanks.
03:27 PM Vitran: pcw_home: Thanks! I am juggling this on paper for a while now.
03:27 PM pcw_home: the +OUT must always be the most positive terminal
03:28 PM pcw_home: The MOSFETs have a reverse diode so if you wire them in reverse (out- to + power) you will find that they are always on
03:30 PM Vitran: andypugh: I was with Zeeshan last night and showed him this video. He said you may be interested in it. It is hydroforming a metal disk for a motorcycle lense using a grease gun as the pressure source. https://youtu.be/A66iw8P5NQ4?t=311
03:34 PM XXCoder: hey guys
03:35 PM XXCoder: I remember someone here linked a website that had tons of ebooks
03:35 PM XXCoder: for example enginnering, math, farming, so on
03:35 PM andypugh: Vitran: Neat, though actually the wrong shape for a reflector, I think.
03:35 PM XXCoder: whats url for that?
03:36 PM Vitran: yeah. It is supposed to be hyperbolic, no?
03:37 PM Vitran: I would guess that hydroforming makes a parabolic shape, but also, I doubt there would be much difference for most applications
03:37 PM XXCoder: they used grease, I was thinking they used air pressure heh
03:38 PM MarcelineVQ: grease guns need the viscosity for their pumping action to work
03:53 PM andypugh: I think that hydroforming makes a spherical shape.
03:54 PM andypugh: (Pobably a bit distorted due to the stiff ring making the constraint uneven)
03:55 PM gloops: blow injection is interesting, probably not a diy pursuit though
04:07 PM JT-Shop: Tom_L: dunno
04:07 PM miss0r: gloops: don't limit your self :]
04:08 PM gloops: its doable miss0r, i took an interest when i was looking at fishing floats
04:09 PM gloops: i like the old painted wooden ones, these days theyre all made from acrylic bubbles
04:33 PM miss0r: yay! I got my old roland CAMM-3 working again... goddamn 64 bit/32bit issues
05:13 PM * JT-Shop wished he could get old acad up and running somewhere
05:16 PM Tom_L: need something?
05:17 PM Tom_L: my kid has a student copy of the latest one and i've got an old one here somewhere
05:18 PM Tom_L: JT-Shop, how many teeth on your stepper pulley?
05:18 PM Tom_L: gonna try for a 4:1 i think
05:18 PM Tom_L: if i can find the sprockets
05:19 PM JT-Shop: Tom_L: I have a small pulley on the stepper and a larger one on a shaft that has a smaller one that the fixed belt runs on
05:19 PM Tom_L: how small is too small is what i'm wondering
05:20 PM Tom_L: 20 ok?
05:22 PM JT-Shop: getting a photo of mine now, I recall something about number of teeth engaged at the same time on the small one as a concern
05:22 PM Tom_L: that's why i'm asking
05:23 PM Tom_L: but they only make pulleys so big to get the right ratio
05:27 PM Deejay: gn8
05:33 PM Vitran: Would this work? https://www.torontogear.com/belt-length-calculator/
05:33 PM JT-Shop: Tom_L: you want to use the round tooth belts if possible, they are much better than the x belts
05:33 PM Tom_L: i know
05:34 PM Tom_L: sdp has a calculator i just didn't know if mcmaster did
05:34 PM Tom_L: i think the ones i have on the sherline are round but i'd have to check for sure
05:35 PM JT-Shop: http://gnipsel.com/images/plasma/X%20Axis%20Drive.jpg
05:35 PM JT-Shop: http://gnipsel.com/images/plasma/Y%20Axis%20Drive.jpg
05:35 PM Tom_L: do you know what ratio yours is?
05:37 PM JT-Shop: don't remember exactly but IIRC I went for the max reduction
05:37 PM Tom_L: 5:1 would give me close to what i have now but i'm going with bigger steppers and ballscrews
05:37 PM JT-Shop: I wonder if I have the calculations I did somewhere...
05:37 PM Tom_L: so 4:1 may be ok
05:38 PM JT-Shop: going with triple stack steppers?
05:38 PM Tom_L: going from a 20tpi screw to ~5 tpi
05:38 PM JT-Shop: I think I'm more than 4-1
05:38 PM Tom_L: probably triple maybe quad :D
05:38 PM Tom_L: 570oz in
05:38 PM JT-Shop: never seen a quad lol
05:39 PM Tom_L: https://www.ebay.com/itm/3pcs-NEMA23-570OZ-IN-5A-3-8-DUAL-SHAFT-STEPPER-MOTOR/253223632606?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160727114228%26meid%3D8d3a58a565e44b5e84e4c07b3f8f7b46%26pid%3D100290%26rk%3D1%26rkt%3D4%26sd%3D253223632606&_trksid=p2060778.c100290.m3507
05:39 PM Tom_L: it's ~100mm long so triple i'd guess
05:40 PM JT-Shop: what are you going to do with a dual shaft stepper?
05:41 PM gregcnc: so 2280ozin on the ballscrew?
05:41 PM Tom_L: JT-Shop, that's what the original ones were on the sherline so i guess i just stuck with that mentality :)
05:42 PM JT-Shop: ah ok
05:42 PM Tom_L: the're not really in the way of anything
05:42 PM Tom_L: the originals had handles one em
05:42 PM Tom_L: i ditched those long time ago
05:43 PM JT-Shop: 570 oz/in sounds like a bit of a stretch for a nema 23 stepper lol
05:43 PM Tom_L: yeah
05:43 PM JT-Shop: https://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper_Systems/Stepper_Motors_-z-_Cables#NEMA_Frame_Size_f=%2223.0%22&start=0
05:43 PM Tom_L: the had one over 600 but at 3.5A which sounded fishy to me
05:44 PM JT-Shop: of course with steppers that number is how hard they stay still lol not how much torque they have
05:44 PM Tom_itx: https://www.ebay.com/itm/Lot-of-3-Nema-23-Stepper-Motors-3-5A-623-in-oz-3-8-single-shaft-for-G540/162492656123?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160727114228%26meid%3D6b1e2d4b7d4d4e4b8bafd119807ef89b%26pid%3D100290%26rk%3D3%26rkt%3D4%26sd%3D253223632606&_trksid=p2060778.c100290.m3507
05:44 PM Tom_L: that's kinda hard to believe
05:46 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Z%20Upright%20bars.jpg
05:46 PM JT-Shop: really hard to swallow that bull lol
05:46 PM Tom_L: hacksaw's gettin dull so i took a break
05:46 PM pcw_home: its possible to have 600 oz/in at 3.5A but that means the inductance will be high
05:46 PM Tom_L: pcw_home right
05:46 PM gregcnc: Oriental motors only go to 325ozin
05:46 PM Vitran: http://www.probotix.com/CNC-CONTROL-SYSTEMS/STEPPER-MOTORS/black-monster-570-oz-in-stepper-motor.html
05:46 PM Tom_L: it's nearly double the ones i got
05:47 PM JT-Shop: you cutting that by hand?
05:50 PM Tom_L: hah
05:50 PM Tom_L: no i've got a diamond saw
05:50 PM Tom_L: still takes a while
05:50 PM JT-Shop: yep, you can use my band saw if you like
05:51 PM Tom_L: i could run out to my bud's shop but i'd have to load and unload it all
05:51 PM Tom_L: i might see if he'll mill the stuff flat when time comes
05:51 PM JT-Shop: I understand
05:52 PM Tom_L: he sold his cnc shop but kept a cnc and has a bridgport and a nice manual lathe
05:52 PM Tom_L: amongst other stuff
05:54 PM Tom_L: all the short pieces takes all the time
05:55 PM Tom_L: looks to me like your belt has 5-6 teeth engaged on the small pulley
05:56 PM JT-Shop: about 1/3 of the small pulley has belt on it
05:58 PM Tom_L: did you have to ream the pulleys or did you find what you needed?
05:59 PM jdh: my claimed 570's are 5A
05:59 PM Tom_L: that's what these are
05:59 PM Tom_L: are you using em?
05:59 PM jdh: on my G0704
05:59 PM Tom_L: work good?
05:59 PM JT-Shop: I think I reamed them to fit
06:00 PM Crom_: ugh... no time to hop on the mill lately...
06:00 PM jdh: they are fine for that. The Z is 2:1, still have to keep accel lower than x/y
06:00 PM Tom_L: hard to find something close so it's got enough beef left after reaming
06:01 PM Crom_: Yesterday, I was with the Ham radio group and we put up a 55' tower. I had to buy a $300 winch to hoist it up into the air.
06:01 PM Tom_L: jdh, what about x & y?
06:01 PM jdh: same motors, direct drive though. they move great.
06:02 PM Tom_L: 5mm screws?
06:03 PM jdh: 1605 x/y, 2005 z I think
06:48 PM skunkworks: andypugh, I have not casted my own cast iron yet.. we looked into locally a few years ago. at the time it was around $4 a pound which didn't seem so bad
06:49 PM andypugh: Indeed, having an expert do it seems to cost about the same as buying the metal yourself.
06:56 PM skunkworks: right
07:01 PM gloops: energy prices in this country are ridiculous
07:01 PM gloops: we go green and it costs £2 to boil an egg
07:02 PM gloops: industry disappears..so we buy everything from china - that burns coal!
07:03 PM Tom_L: zeeshan!
07:03 PM zeeshan: hi
07:03 PM Tom_L: just headin out the door..
07:17 PM XXCoder: hey zeeshan
07:17 PM zeeshan: whats up
07:18 PM XXCoder: hey JT-Shop was it you who linked me that site where theres lots of older tech books, on everything from machining to farming?
07:18 PM XXCoder: not much
08:01 PM zeeshan: the internet frustrates me sometimes
08:01 PM zeeshan: im lookin for a simple usb charger + volt meter
08:01 PM zeeshan: theres like 90238023912138093210921382319231 options
08:02 PM zeeshan: https://www.ebay.com/itm/291777275730
08:02 PM zeeshan: finally narrowed down to that
08:02 PM zeeshan: i hope it works :D
08:02 PM zeeshan: need one for the boat and back of truck
08:04 PM Tom_L: what you been up to?
08:04 PM zeeshan: work pretty much
08:05 PM Tom_L: tryin to think what local store here sells dykem
08:06 PM hazzy: Unfortunately that has "Double USB Input", don't you want dual USB output? I guess that is so you can charge your boat from your iThing(TM) :D
08:06 PM zeeshan: whatrs wrong with sharpie
08:06 PM zeeshan: hazzy
08:06 PM Tom_L: it doesn't come in a spray can?
08:06 PM zeeshan: its nice to have some music on the boat :)
08:06 PM zeeshan: or charge the cell phone
08:06 PM zeeshan: tom any industrial supplier will have
08:07 PM Tom_L: yeah i know
08:07 PM Tom_L: just tryin to think... some have gone away around here or changed hands
08:08 PM hazzy: I can normally find dykem at ACE hardware around here
08:08 PM Tom_L: really?
08:08 PM Tom_L: i wondered about them
08:09 PM zeeshan: my drive to the states was frigging awesome
08:09 PM zeeshan: i have a new found respect for usa :)
08:09 PM hazzy: yes, but the ACEs seems to very a lot form store to store
08:09 PM Tom_L: hah
08:09 PM zeeshan: west virgina is frigging pretty.
08:09 PM Tom_L: zeeshan i forgot where you went
08:09 PM zeeshan: savannah georgia
08:09 PM Tom_L: yeah east is nice
08:09 PM Tom_L: goin to savanna next month
08:09 PM zeeshan: drivin?
08:09 PM Tom_L: no
08:09 PM gregcnc: zee and you went back to Canada?
08:10 PM zeeshan: gregcnc: canada is better
08:10 PM Tom_L: inlaw works at gulfstream
08:10 PM XXCoder: heh if usa goes to shit im probably going to canada :P
08:10 PM zeeshan: but i really envisioned usa being a completely baren land
08:10 PM XXCoder: american wetback
08:10 PM zeeshan: it was nice to see all the trees and animals
08:10 PM gregcnc: uhoh
08:10 PM zeeshan: there was still a bit of smog along the mountains
08:10 PM zeeshan: which was a bit dissapointing
08:10 PM XXCoder: zeeshan: lol hardly! you ever seen WA state? its essentally same as canada on west side
08:11 PM Tom_L: that's hick country
08:11 PM Tom_L: alot of it
08:11 PM zeeshan: it is
08:11 PM zeeshan: i like the accent tho
08:11 PM Tom_L: business or pleasure?
08:11 PM zeeshan: work
08:11 PM zeeshan: 16hr straight there
08:11 PM Tom_L: should have gone to tybee island
08:11 PM zeeshan: work for a couple days
08:11 PM zeeshan: came back 16 hr
08:12 PM zeeshan: dude i was pulling 16 hr days
08:12 PM zeeshan: i badly wanted to go.
08:12 PM Tom_L: you flew didn't you?
08:12 PM zeeshan: nah i ended up drivin
08:12 PM Tom_L: it's more than 16 hrs
08:12 PM zeeshan: it took me 16 :p
08:12 PM zeeshan: its amazing how you drive a bit and the world suddenly changes
08:12 PM Tom_L: but i have to go east then south
08:13 PM Tom_L: i've driven that a few times
08:14 PM zeeshan: i got a few looks in wv
08:14 PM zeeshan: cause of my skin
08:14 PM zeeshan: :)
08:14 PM zeeshan: i had a venison burger at arbys
08:14 PM zeeshan: USA FTW
08:14 PM Tom_L: haven't tried one yet
08:15 PM zeeshan: they had a turkey one too
08:15 PM hazzy: zeeshan: Your in Canada? Were? I am one of those Georgia hicks you saw down here :) I spent some time in Canada (North of Montreal) for the first time this summer. Beautiful area.
08:16 PM zeeshan: hamilton.. about an hr from toronto
08:17 PM jdh: it didn't take 16 hrs to get through South Carolina on I95?
08:17 PM zeeshan: https://www.google.ca/maps/dir/hamilton+ontario/savannah+georgia/@37.5893886,-83.6703558,6z/data=!3m1!4b1!4m13!4m12!1m5!1m1!1s0x882c986c27de778f:0x2b6aee56d8df0e21!2m2!1d-79.8711024!2d43.2557206!1m5!1m1!1s0x88fb75fc78f20659:0x4e0c6751036020bc!2m2!1d-81.0998342!2d32.0835407
08:17 PM zeeshan: i didnt go through i96
08:17 PM zeeshan: 95.. mostly i77 and 79
08:18 PM jdh: good, 95 through SC sucks.
08:18 PM zeeshan: i slowed down through virginia
08:18 PM zeeshan: i read on the internet you can get jailed for speeding more than 15 mph
08:18 PM zeeshan: lol
08:18 PM Radicarian: So there's only ~100 machinists hanging out on IRC?
08:18 PM zeeshan: just did 5 mph over
08:18 PM jdh: in theory, that is true most anywhere
08:19 PM jdh: it is reckless driving
08:19 PM zeeshan: dude you can do 31 mph over here
08:19 PM zeeshan: anything over is license suspension
08:19 PM zeeshan: but really no jail
08:19 PM hazzy: But your speed limits are much lower, arn't they?
08:20 PM zeeshan: 62 mph
08:20 PM zeeshan: equiv
08:20 PM jdh: 79mph is about as fast as I want to go anway
08:20 PM zeeshan: so you can do 93 mph
08:20 PM zeeshan: im comfy at 75
08:20 PM zeeshan: thats pretty much what i did throughout
08:21 PM zeeshan: jdh: are you in sC?
08:21 PM hazzy: Out west a lot of the HWY are 80 - 85 mph! I like it.
08:21 PM jdh: I drove back from florida tuesday. other than south carolina, it was 79mph most of the way.
08:21 PM jdh: zeeshan: north carolina
08:21 PM zeeshan: why yall talk funny
08:21 PM zeeshan: :)
08:21 PM gregcnc: 100kmh posted, when do they start pulling you over?
08:22 PM jdh: eh?
08:22 PM zeeshan: 120 kmh
08:23 PM gregcnc: Chicago is 55mph posted and on a good day everyone is 80+
08:23 PM skunkworks: the only good thing that came out of our republican gov'ner was the 70mph speed limit
08:23 PM jdh: $391 to fly to savannah and you drove 32 hours?
08:24 PM hazzy: On 75 north of Atlanta posted is 35mph, few people go under 70
08:24 PM gregcnc: zee is the lathe lathing yet?
08:24 PM jdh: 35mph on an interstate?
08:24 PM hazzy: Yep,
08:24 PM jdh: I have driven atlanta to chatt a billion times and never seen 35
08:24 PM hazzy: it is sad, it changes depending on the time of day
08:25 PM hazzy: The speed limit signs are electric, max I have seen it 55, lowest I have seen is 0 !!!
08:26 PM zeeshan: jdh: i hate flyin
08:26 PM jdh: flying is ok, I fucking hate airports
08:27 PM zeeshan: https://photos.google.com/share/AF1QipPdAQOwJcVpsqOVLHGEgWTQzC6GGY6snEpnTuaY8VINWwzXOCcIz_b5QK9JeCtl_w?key=cndaVmJ2OVFmVllVZUNTMUpjNU5TSll6TE8yUjV3
08:27 PM zeeshan: will home depot have these little craps
08:27 PM Tom_L: zeeshan in the south they have what they call super speeder tickets
08:27 PM Tom_L: you get 2
08:29 PM Tom_L: probably
08:31 PM Radicarian: "Super Speeder"??
08:31 PM zeeshan: yea i read about them
08:32 PM Tom_L: my inlaw moved down there and didn't know it
08:32 PM jdh: they drive too fast
08:32 PM Tom_L: he paid one of em and let the other one go
08:32 PM Tom_L: got pulled over in a suit n tie on his lunch break and hauled to jail :)
08:33 PM Tom_L: his boss laughed his ass off
08:34 PM sync: 79mph seems slow :/
08:34 PM Tom_L: not if you hit a bridge
08:34 PM jdh: it is slow enough that you can still irc and drive
08:35 PM sync: well, don't hit a bridge
08:36 PM sync: I usually try to average about 80
08:37 PM Radicarian: I've used IRC radio in the past while on long drives
08:37 PM Radicarian: Reads out messages
08:37 PM jdh: I feel I have better chances of not getting pulled over at 79
08:37 PM sync: faster starts to get quite hard
08:37 PM Tom_L: sync, you'd get run over in Tx
08:37 PM sync: 100mph+ avg is suprisingly hard
08:38 PM sync: Tom_L: on average, I'm keeping to the limit where one is posted
08:38 PM gregcnc: https://www.illinoisdriverslicensereinstatementlawyer.com/aggravated-speeding.html
08:39 PM Radicarian: Hey, question for y'all. Is there any open source DNC software?
08:40 PM Tom_L: several comm programs will do that
08:40 PM Tom_L: it's in the handshaking
08:41 PM Radicarian: Hmm, any recommendations for what I should check out first?
08:42 PM Tom_L: realterm may do it
08:42 PM sync: the most annoying thing about the long distances and high averages is that I can currently only go about 145mph realistically
08:43 PM Tom_L: Radicarian, my bud uses it to download but he's not DNCing his
08:43 PM jdh: sync: bike?
08:44 PM Radicarian: I'll check it out. I picked up a Mazak recently, just seeing what options are out there.
08:45 PM sync: no jdh, my bike will break 200
08:45 PM Tom_L: i used to have some that came with cad cam software
08:45 PM Tom_L: http://www.practicalmachinist.com/vb/cnc-machining/any-free-dnc-software-188449/
08:45 PM Tom_L: Radicarian
08:46 PM Radicarian: Yeah I've been combing through that page
08:47 PM Tom_L: it's no different than an old serial printer
08:47 PM Tom_L: realterm should do it fine
08:47 PM Radicarian: Even if it's a weird file format?
08:47 PM Tom_L: send it raw ascii
08:48 PM Tom_L: his is 4800 baud and i have to add some delay to it as well but it works
08:48 PM Tom_L: you can do that with realterm
08:48 PM Radicarian: I think Mazak has it's own weird file extension since you program on the controller. There's Mazakcam that can actually read that, but that's 5K
08:49 PM Tom_L: long as you get the protocol right it should be ok
08:49 PM Tom_L: some are 8bit some 7 with 2 stop bits etc
08:49 PM Radicarian: Yeah I'm gonna play around, thanks!
08:50 PM Tom_L: if you can find that out it should be golden
08:50 PM Tom_L: years ago we used procomm plus
08:54 PM jdh: I was a Telix fan
08:59 PM zeeshan: Radicarian: what mazak
09:00 PM zeeshan: controller
09:00 PM zeeshan: do you have eia option
09:01 PM Radicarian: Umm one sec
09:01 PM Radicarian: And yeah I think so
09:01 PM zeeshan: then you can just drip feed gcode
09:03 PM Tom_L: zeeshan done anything on the lathe?
09:03 PM zeeshan: nah man
09:03 PM zeeshan: :D
09:03 PM Tom_L: one big arse paper weight..
09:03 PM zeeshan: pretty much
09:03 PM zeeshan: so many things to do before it :)
09:04 PM Radicarian: T-Plus controller
09:04 PM zeeshan: Tom_L: ive been working with ethernet stuff at work
09:04 PM zeeshan: im thinking of using ethernet on the lathe
09:04 PM zeeshan: learning experience
09:04 PM Tom_L: i started laying out a little mill to replace my sherline
09:04 PM zeeshan: which one
09:05 PM Tom_L: mine
09:05 PM zeeshan: i thought you only had a sherline
09:05 PM Tom_L: true
09:05 PM Tom_L: i'm making one
09:05 PM zeeshan: oh
09:05 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_base_XAxis3.jpg
09:06 PM zeeshan: those linear guides are so cheap
09:06 PM zeeshan: makes it so much cheaper to make a diy cnc mill now
09:06 PM Tom_L: i found a set for cheap but i may have to cut a couple of the screws
09:07 PM Tom_L: but it should be better than what i've got
09:08 PM sync: yeah zeeshan ethernet everything
09:08 PM Radicarian: Hmm that's interesting. I found a page that says for T-Plus controllers to set the DNC software to 7 Databits, but 8 on the controller
09:08 PM Radicarian: http://dncsetup.com/mazak.html
09:10 PM Tom_L: 2 stop bits
09:10 PM Tom_L: xon xoff software flow control
09:10 PM Tom_L: ack nak
09:11 PM Radicarian: So what's that for exactly? Controlling the actual start and stop of the flow of info into the controller?
09:11 PM Tom_L: yes
09:11 PM Tom_L: look at that page
09:12 PM Tom_L: if it was hardware flow control 7 & 8 or 4 & 5 would be used
09:13 PM Tom_L: so they use a very simple 2 wire serial with software flow control
09:15 PM Tom_L: zeeshan any thoughs on the layout?
09:18 PM zeeshan: looks good to me.. may want to look at some strengthening in the x direction
09:18 PM zeeshan: do you have enough thread engagement when bolting down the rails to the hss
09:18 PM Tom_L: it's thickwall tube
09:18 PM Tom_L: should be ok
09:19 PM Tom_L: gonna try to have my bud mill the stuff flat
09:19 PM zeeshan: in the 4 bearing config
09:19 PM zeeshan: youre keeping 2 floating
09:19 PM zeeshan: and 2 fixed
09:19 PM zeeshan: right?
09:19 PM Tom_L: what do you mean?
09:20 PM Radicarian: Ah yeah, I understand
09:20 PM Radicarian: Thanks
09:21 PM sync: Tom_L: it is overconstrained
09:21 PM sync: and you would need two carriages with play and two without
09:21 PM sync: otherwise it will bind
09:21 PM Tom_L: 2 on one slide with play right?
09:22 PM zeeshan: ya
09:22 PM Tom_L: i get the binding thing but not sure how to go about it
09:22 PM zeeshan: what we do at work is
09:22 PM zeeshan: you'd pocket one rail into the hss
09:22 PM zeeshan: the other is on a flat surface
09:23 PM zeeshan: bolt down the rail to the pocket'ed side.. keep the other rail hand tight
09:23 PM zeeshan: bolt everything in, move carriag eback and forth
09:23 PM zeeshan: tight3en
09:23 PM zeeshan: the fixed side bearings are preloaded
09:23 PM zeeshan: the free side bearings are not
09:23 PM zeeshan: i wouldnt sweat it too much :)
09:23 PM sync: that is the cheap way to do it
09:24 PM sync: you can also use an autocollimator or similar equipment to align the rails well
09:24 PM sync: hermle uses only three carriages to prevent the overconstraint
09:24 PM Tom_L: what about a last word indicator along the fixed one?
09:24 PM zeeshan: yea
09:24 PM zeeshan: that will work also
09:25 PM Tom_L: i planned on doing that anyway
09:25 PM zeeshan: i personally like that way better
09:25 PM zeeshan: but one flaw with that one (not really an issue in your case)
09:25 PM zeeshan: if the one rail isn't straight
09:25 PM sync: yeah
09:25 PM sync: you will just copy the error
09:25 PM zeeshan: you're sol
09:26 PM sync: the tricky part is also measuring how it moves up and down
09:27 PM sync: also don't assume your rail to be straight
09:27 PM sync: because they are not due to the way they are made
09:27 PM sync: the profile is spot on tho
09:28 PM zeeshan: funny we are talkin about this
09:28 PM zeeshan: https://photos.google.com/share/AF1QipMMCe8BVIvu6zv4-xEH_gdoD6rpe0m_AJCkfFLtetjtLJ3glaZEl85nt2kmr5TV1A?key=eHhCSHMzdEs0dk53MU9VMUF0RmpjZElCdEdkRm53
09:28 PM zeeshan: this is what i was help supervising at savannah ga
09:29 PM zeeshan: https://photos.google.com/share/AF1QipNIYCubgTQgdf8Y1PKDJtFpIZuRC7GrzNpwsOjErP8NPec7cEtaoXfQ26Wh-XsRwg?key=eWJ3SUlZMnQzRlp0cnRsRTJmaVZnUWRrc0c4aDBB
09:29 PM zeeshan: https://photos.google.com/share/AF1QipPo57tSb1oJ055Ig8W0Rn2qcYpPOqWlMD4Uz14lz_jUCB9HLNA_2upmsck6ObYoyQ?key=NGRUYTZ5N2t5c0dlYW5zVy1PQlN3dXgtNjZPR2tR
09:29 PM zeeshan: those rails needed to be straight within 15 thou
09:30 PM zeeshan: used 3d laser measurement and some cad
09:30 PM zeeshan: to get it all in spec within 5 iterations :)
09:35 PM Tom_L: trying to figure out how to measure the rails for flat without fancy equipment
09:36 PM Tom_L: need a granite slab and a height gage or such but i don't have one
09:37 PM Tom_L: wonder how flat a piece of glass is
09:37 PM sync: that's a pretty loose spec tho zeeshan
09:37 PM zeeshan: theyre pretty tight
09:37 PM zeeshan: for over 20 meters!
09:38 PM sync: nah, milling machines are significantly closer
09:38 PM Tom_L: that rail nasa had they used for acceleration tests was closer than that
09:38 PM Tom_L: and it was rather long
09:38 PM zeeshan: its definitely doable
09:38 PM zeeshan: just takes time
09:38 PM sync: yeah
09:38 PM sync: it is fiddly
09:38 PM sync: Tom_L: a piece of glass will bend
09:38 PM Tom_L: i know
09:39 PM Tom_L: just thinking..
09:39 PM sync: then get a surface plate
09:39 PM sync: but it is not of much use for this application
09:39 PM Tom_L: i'll do the best i can with it
09:39 PM sync: you need a master square and ideally a granite beam
09:40 PM zeeshan: or you can eliminate the problem
09:40 PM Tom_L: i just wanted something to build :)
09:40 PM zeeshan: by using one rail
09:40 PM zeeshan: :-)
09:40 PM zeeshan: (very possible on the Z)
09:41 PM sync: that can still be going up and down
09:41 PM sync: which is why I love autocollimators
09:41 PM sync: you get two axis in one shot
09:43 PM sync: and is why I got two of them
09:45 PM Radicarian: how much do those run sync?
09:45 PM zeeshan: sync: the 3d laser measurement we were using
09:45 PM zeeshan: had a resolution of +/-0.001
09:45 PM zeeshan: lol
09:45 PM Radicarian: And what, do you put mirrors on the two rails?
10:28 PM sync: one mirror Roguish
10:28 PM sync: eh
10:28 PM sync: yeah zeeshan, they suck
10:28 PM sync: unfortunately
10:28 PM sync: with an autocollimator you get sub arcsecond resolution really easy