#linuxcnc | Logs for 2018-10-10

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[00:12:50] * flyback bites MarcelineVQ
[00:12:51] <flyback> CANUCK
[00:12:54] <flyback> :P
[00:12:58] <flyback> welcome to channel
[00:30:56] <MarcelineVQ> You're full of beans
[00:33:53] <ziper> https://i.redd.it
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[01:14:13] <flyback> http://www.smallgiant.tv
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[02:57:28] <Deejay> moin
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[04:12:06] <selroc> log
[04:12:06] <c-log> selroc: Today's Log http://tom-itx.no-ip.biz:81
[05:03:34] <gloops> all quiet
[05:10:00] <pink_vampire> hi
[05:10:31] <gloops> morning, did you get the driver working pink?
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[05:11:24] <pink_vampire> no
[05:11:38] <selroc> hi
[05:11:45] <pink_vampire> i sent it to gecko
[05:11:49] <gloops> new driver then?
[05:11:52] <gloops> ahh ok
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[05:18:11] <XXCoder> heys
[05:18:18] <pink_vampire> hi
[05:19:30] <XXCoder> sand sand sand the fiberglass parts. so boring. lol
[05:21:49] <pink_vampire> xev don't don't recognize some of the buttons on my keyboard
[05:24:32] <XXCoder> weird
[05:36:00] <gloops> XXCoder i made a mold for fibreglass door canopies, about 5 ft accross, i was on the brink of weeping by the time id rubbed it down to a glass finish
[05:36:38] <XXCoder> thats all? I turn fiberglass blocks into part lol
[05:36:50] <XXCoder> good thing I use tons of coolant or otherwise...
[05:37:04] <gloops> all! it seemed to take forever lol
[05:37:26] <XXCoder> dumbass on other shift always let coolant stop and let it make powder. it kills tools fast and dust is very very bad
[05:38:35] <gloops> yeah that stuff gets everywhere
[05:38:56] <XXCoder> its in same family as abestos
[05:39:11] <XXCoder> only reason its not banned is that it does not break down in lungs so it gets cleared out
[05:39:18] <XXCoder> its still quite nasty
[05:40:37] <gloops> i noticed i was getting sore throat when messing with grp, the fumes and the dust
[05:42:20] <XXCoder> ow
[05:42:31] <XXCoder> I always kept dust under control so never happened to me
[05:42:41] <XXCoder> I use vent sanding center to keep dust away
[05:43:46] <gloops> i always wear a mask but even so, i noticed it was affecting my throat, nothing major but it was there
[05:44:57] <gloops> lungs are one of those things you dont notice any injury, breathe in a load of dust - no obvious effect, 10 years later when you start coughing
[05:45:26] <XXCoder> not for me
[05:45:42] <XXCoder> my lungs are already damaged for long while now. too many lung affecting dieases
[05:45:56] <XXCoder> (not serious stuff but stacked up it damages lungs)
[05:50:55] <gloops> yeah, delicate things, i have read that if someone stops smoking the lungs are fully repaired after 10 years
[05:53:13] <XXCoder> yeah
[05:53:35] <XXCoder> doc told me if I have few more permenia I probably would need oxygen tanks or die
[05:54:22] <gloops> whoo i would be looking after my chest in that case
[05:54:36] <XXCoder> did you have em 10 times?
[05:55:26] <gloops> remember a few of the old miners round here ending up on oxygen, very sad to see big strapping men gasping, unable to do much
[05:55:44] <gloops> i havent had permenia no
[05:55:46] <XXCoder> blacklung is nasty stuff
[05:56:02] <XXCoder> its making a comeback now, after some reglations were nixed
[05:56:22] <gloops> all the mining has gone here anyway now
[05:57:06] <XXCoder> we really need to stop using coal and start space mining
[05:57:11] <XXCoder> lots rocks out there.
[05:57:25] <XXCoder> as bonus theres lots of He3 out there also. makes fusion much easier
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[06:01:57] <gloops> either that or make some breakthrough with non fossil/mineral energy
[06:02:35] <XXCoder> He3 would be that
[06:02:42] <XXCoder> coal is already dead
[06:02:48] <XXCoder> usa is trying to necro it up but...
[06:04:46] <gloops> was looking through some old photos of my town last night, a lot of people say they wish coal would come back - when you look at the old photos it would be shocking to see that today
[06:04:55] <gloops> place was filthy and black
[06:05:47] <XXCoder> wow
[06:05:50] <gloops> rivers were dead, air was poisoned, the ground was toxic, roads just running straight through big heaps of waste either side
[06:07:19] <XXCoder> and they want it back
[06:08:47] <gloops> yep, the good old days
[06:13:05] <XXCoder> fuj
[06:13:07] <XXCoder> fun
[06:28:03] <pink_vampire> someone know about an extension like Nuke but permanent ?
[06:29:51] <XXCoder> nuke this! plugin is best of all so far I know, but nothing makes it perment
[06:30:10] <XXCoder> nuke anything I mean
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[06:32:47] <jthornton> morning
[06:33:16] <Tom_L> hey
[06:33:47] <XXCoder> hey jb
[06:34:13] <jthornton> jb's not here he is in Kenner La
[06:34:19] <Tom_L> 46�F Hi 58
[06:34:45] <Tom_L> but at least you're gettin the rain instead of me
[06:35:07] <jthornton> damn it's 72°F
[06:36:36] <jthornton> it's wet outside but not raining atm
[06:37:12] <XXCoder> it doesnt even get over 50f entire week here. its now "mid-fall" weather pattern here
[06:37:40] <Tom_L> rain gage was full at 5" yesterday
[06:37:55] <XXCoder> *59f
[06:37:57] <jthornton> damn
[06:38:11] <Tom_L> previously 2"
[06:38:20] <jthornton> python schedule does not work right lol it's an hour off for some reason
[06:38:41] <Tom_L> it's just warmin up for the close of CDT
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[06:42:37] <jthornton> it doesn't say where it gets the time info so the code is faulty schedule 08:00 fires off at 9pm lol not 8am
[06:43:06] <jthornton> hmm I wonder if it's using utc time
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[06:55:27] <pink_vampire> i found ContentBlockHelper
[06:57:01] <XXCoder> interesting its made for ads, but can work on any part
[06:57:17] <pink_vampire> yeah
[07:00:50] <pink_vampire> i just can't get the keyboard keycode from xev
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[07:04:32] <pink_vampire> this is what i'm get in xev for "volume up" "volume down" "mute"
[07:04:35] <pink_vampire> https://i.imgur.com
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[07:08:25] <XXCoder> I got same
[07:09:37] <pink_vampire> i found that https://unix.stackexchange.com
[07:18:07] <pink_vampire> found it
[07:18:31] <pink_vampire> killall xfce4-volumed
[07:19:13] <XXCoder> whats you want to use vol buttons for
[07:19:25] <pink_vampire> for the cnc
[07:23:45] <XXCoder> for something besides volume?
[07:25:01] <pink_vampire> z axis
[07:25:06] <pink_vampire> ans c axis
[07:26:19] <pink_vampire> i got a new mini keyboard
[07:26:31] <XXCoder> nice
[07:27:08] <XXCoder> though if you get a cheap keyboard you could pull it apart and wire buttons in whatever array and design you want
[07:27:17] <XXCoder> and use cnc to make a nice faceplate for it
[07:28:13] <pink_vampire> on that mini keyboard there is 0 place for wires it is all membranes
[07:28:30] <XXCoder> you could solder to those and use regular wires
[07:29:28] <pink_vampire> no room
[07:29:54] <XXCoder> yeah if you wanted to do it, would better to get cheap keyboard not that mini one
[07:30:22] <pink_vampire> i need to be mini
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[07:34:23] <XXCoder> lol ok
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[08:02:13] <methods_> https://www.youtube.com
[08:02:17] <methods_> cool hopping robot
[08:08:15] <XXCoder> yeah
[08:13:11] <jthornton> damn super thin egg shells broke in my pocket...
[08:13:44] <XXCoder> you need to feed chickens more calium
[08:15:24] <XXCoder> calcium
[08:17:26] <jthornton> they have crushed oyster shell all they want
[08:18:28] <XXCoder> odd
[08:19:07] <jthornton> yea, I'm switching their feed over to layer which has extra calcium in it
[08:20:06] <pink_vampire> i can't edit the shift botton in linuxcnc axis file
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[08:47:39] <diverdude> I need my arduino to give status updates regarding motor positions via serial cable quite often (several times per second). This is done while it feeds the stepper motors with pulses. I can a small *clonk* from motors every time a status update is transmitted. I would think this is caused by the small delay it takes when sending over serial port. Is there any way i can avoid this such that motors are running smoothly?
[08:51:33] * jthornton checks to see if this is the #arduino channel... nope
[08:52:54] <pink_vampire> diverdude: what are you trying to do?
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[09:09:05] <rmu> diverdude: it is certainly possible to do that with atmegas. but my solution is of the kind "just program is" ;-)
[09:09:12] <rmu> s/is/it/
[09:11:52] <rmu> probably better if you ask on some arduino-related channel
[09:18:18] <pink_vampire> I solved the media keys issue (volup, voldown, mute) killall xfce4-volumed, and to prevent it from running at startup, edit the file /etc/xdg/autostart/xfce4-volumed.desktop just comment each line in the file with # and reboot, after that xev will recognize the media key and there is no issue to remap them
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[09:26:32] miss0r2 is now known as miss0r
[09:26:36] <miss0r> 'Afternoon
[09:27:20] <JT-Shop> hey
[09:27:42] <miss0r> diverdude: it seems you have reached the end of the road :) serial interruption of stepper driving is a nonsolvable issue
[09:28:18] <miss0r> JT-Shop: Today I did what I NEVER thought I would do. I sent out a relay coil to be re-coiled :D
[09:29:50] <miss0r> that relay coil will probally set me back $5-600
[09:29:52] <miss0r> :D
[09:30:23] <miss0r> But when you can't get a replacement, and you can't fit anything else but the original in there.. and theres no possible replacement available anywhere.. well, then you just have to pay up
[09:31:45] <JT-Shop> damn, a large relay coil?
[09:32:08] <miss0r> diverdude: That being said; I've seen "solutions" where a cycle delay is inserted on each cycle, but the one doing the serial send, to try'n mitigate the 'dead' position. Also; have you tried running the serial baud at a much higher rate? that can also reduce the 'lag'
[09:32:12] <miss0r> jt-shop: no
[09:32:23] <miss0r> 30x30x25mm
[09:33:04] <miss0r> but some poor SOB has to unwind it, to figure out how many turns have to go on there & figure out what gauge.
[09:33:14] <miss0r> that that will take a while, as it was pretty badle burned
[09:33:20] <miss0r> badly*
[09:35:10] <miss0r> JT-Shop: I suppose I could find a replacement in the US. but as time is also an issue(of the essence actually) that would not work. It is a 110v AC 50-60hz relay with 5 NO and 5 NC contacts
[09:35:36] <miss0r> and I can't fit two seprate relays in there, to make up for the amount of contacts
[09:36:52] <JT-Shop> yea 3 line and 1 aux is common but 5 is not very common
[09:37:33] <miss0r> Indeed
[09:38:09] <miss0r> but this is not a 5 pole double throw(5p-DT) it has 10 seprate contacts.
[09:39:16] <miss0r> Thats what you get with Czech machinery from the '70s
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[09:41:24] <JT-Shop> lol
[09:41:57] <JT-Shop> I've seen some Korean machines with wild el cabinets lol
[09:44:20] <miss0r> Indeed :D But as with so many other things; relays like these are not used anymore. They were basically obsolete when the PLC was invented
[09:50:52] <diverdude> miss0r: i am currently running at 115200
[09:51:17] <diverdude> miss0r: i was just thinking if maybe i could somehow report the position using sth. else than serial port to avoid the problem
[09:51:42] <miss0r> diverdude: I don't know what to tell you :) You are basically asking a processor barely fast enough to run steppers to run steppers & report back using serial
[09:51:42] <miss0r> :)
[09:52:03] <miss0r> why do you need it to report back each second?
[09:52:32] <diverdude> miss0r: its because i want to stamp my images with a position
[09:53:01] <miss0r> question: why not "pause" at each image, and pickup after that?
[09:53:22] <diverdude> miss0r: because speed is of the essence :/
[09:53:46] <miss0r> hmm.. alright. I'll need to mull this over :D I need to go pick up the kid now. I'll be back tonight
[09:53:53] <miss0r> see you
[09:53:58] <diverdude> miss0r: ok, thanks :) see you
[09:54:01] <rmu> you need to do step generation in an interrupt routine
[09:54:23] <rmu> better yet let a timer to the stepping
[09:54:35] <diverdude> rmu: i see - how do i do that?
[09:55:07] <rmu> perhaps using interrupt routine to send serial stuff would also work
[09:55:47] <rmu> diverdude: read ref manual to your µC (atmega328 or similar for arduinos), and program it :)
[09:57:55] <rmu> a bit of "dirty" solution could be: in your position reporting, send only one character per loop
[09:58:18] <rmu> iteration
[09:58:33] <diverdude> hmm ok
[10:01:04] <rmu> the uart needs some time to send out a character, one character has 10 bits, @ 115200 bps that means you can send 11520 characters per second. your cpu runs nearly 1400 cycles per character.
[10:02:49] <diverdude> ok i see... i am currently sending '{"ctype":2,"statusx":-66080,"statusy":-43620,"timestamp":"1539179481865"}' in each message
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[10:03:52] <diverdude> so thats around 75 characters
[10:04:01] <rmu> that takes about 6-7ms to send
[10:04:18] <diverdude> right, very interesting
[10:06:44] <diverdude> rmu: does it take same amount of time for the arduino to recieve data as to send?
[10:07:38] <rmu> yes of course, it is the transmission that takes that long
[10:08:27] <rmu> diverdude: you should research if serial.write does some buffering, I think ATMegas have some FIFO and you can write some number of characters "at once" without delay, and the hardware transmits it in the background
[10:08:57] <rmu> diverdude: you could try sending e.g only 60 characters or 30 characters and look if there is a difference
[10:09:11] <rmu> https://forum.arduino.cc suggests there is a 63 character output buffer
[10:09:29] <diverdude> rmu: yeah exactly - i was thinking that something like that could be happening...of course the actual transmission does the same...but maybe there is a buffer of some sort that can take some load of the arduino cpu
[10:11:06] <rmu> try making your messages shorter than 63 character, it could be that could make a difference. and dont' send more than like 10 per second
[10:11:36] <rmu> 10 messages per second
[10:12:11] Jin|away is now known as Jin^eLD
[10:23:15] <diverdude> rmu: thats a good point. i will try that
[10:24:08] <diverdude> rmu: i can easily get it to around 50, so will try
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[10:43:24] <CNC_Brian> Anyone there?
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[10:57:21] <HighInBC> I am
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[11:01:54] <gloops> problem CNC_Brian ?
[11:02:53] <gloops> so, i made the bandsaw frame, rollers adjusters on, i made 2 screw lifts for either side, i made the skate bearings, ready to roll
[11:03:17] <gloops> all i need now is to fit those together and make the bed - which is scaffolding poles and clips, easy
[11:03:43] <gloops> and paint it
[11:05:29] <CNC_Brian> No just seems very quiet on here lately
[11:05:41] <CNC_Brian> Must have fixed all the bugs
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[11:07:21] <gloops> yeah some of the regulars left/died
[11:08:05] <CNC_Brian> Im trying to track down someone with a lathe in the south east
[11:08:17] <CNC_Brian> Needs to be a student size
[11:08:40] <gloops> no luck on ebay then
[11:09:11] <CNC_Brian> I don't wan to buy one I need some machining done
[11:09:26] <CNC_Brian> My little Chester can't cope
[11:09:41] <gloops> i see
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[11:10:43] <gloops> cant help there, im in the north east - UK
[11:11:08] <CNC_Brian> Im after some CNC tool holders machining
[11:11:34] <CNC_Brian> I bought some eBay stuff but the runout is masive
[11:12:50] <CNC_Brian> So I bought sone EN19 bar, but the 1Hp motor can't cope with anything over .05'
[11:18:06] <gloops> cant gear it down?
[11:18:33] <gregcnc> how much of a hurry are you in?
[11:18:52] <rmu> is that .05 foot?
[11:20:34] * gregcnc looks for my caliper with foot increments
[11:21:21] <gloops> i was just trying to work out .05 feet lol
[11:22:14] <rmu> .05 is 1/20, 1/20 of 12 inches is about 15,something millimeters
[11:22:20] <rmu> not bad for 1hp ;-)
[11:22:45] <gregcnc> all depends on surface speed?
[11:23:58] <gloops> thats one advantage of my centenarian lathe, backgearing, i mean you can have variable speed electric yeah, but no increase in torque
[11:25:09] <gloops> other than that, no advantages really, apart from looking quaint
[11:26:05] <gregcnc> HP determines material removal rate, unless limited by surface speed
[11:27:18] <gloops> well im assuming brian is saying even at the lowest speed he cant cut that diameter
[11:27:39] <rmu> if your chip is too small it can also be a problem
[11:27:48] <rmu> i.e. rubbing tool
[11:27:50] <gloops> which is odd to me, 15mm? 1 HP should cut that
[11:28:28] <gloops> these old lathes used to run on treadles
[11:28:30] <gregcnc> if you guys really think he's cutting .05 FEET I'm out for teh day
[11:28:47] <gloops> i think he means .5 feet
[11:28:50] <gloops> 6 inch
[11:28:53] <rmu> lol
[11:29:12] <gregcnc> it's more than i can take
[11:29:32] <gloops> you need more practise
[11:29:46] <rmu> I actually believe he means 0.05" depth of cut
[11:29:55] <gregcnc> of course
[11:29:59] <gloops> right
[11:30:15] <gloops> 15mm cut...
[11:30:24] <gloops> oh inches
[11:31:24] <gregcnc> gloops have you ever calculated cutting power for lathe?
[11:31:37] <gloops> oh yes im sure i have
[11:31:45] <gloops> i dont work like that though
[11:32:01] <gregcnc> clearly
[11:32:19] <gloops> i go by how it is cutting
[11:33:20] <gloops> theres a lot to be said for the well trained eye and ear
[11:33:57] <gregcnc> 80 years ago
[11:35:14] <gloops> you never say - that doesnt sound right, when a job is running on the cnc?
[11:37:10] <gregcnc> sure, but what are the solutions?
[11:37:58] <CNC_Brian> Sorry customer call.
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[11:38:53] <CNC_Brian> Sorry with 50 though doc the motor is bogging down
[11:39:09] <gregcnc> diameter and RPM?
[11:39:36] <CNC_Brian> I need to take half inch of material of and it is very slow going
[11:40:12] <CNC_Brian> Bar is 40mm
[11:40:17] <CNC_Brian> EN19
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[11:41:02] <CNC_Brian> Not 100% sure of RPM as I have it geared down almost to minimum, but I get a good chip
[11:41:37] <CNC_Brian> Just trying rtf find someone with a decent size lathe I can ask to rough out the parts
[11:42:32] <CNC_Brian> I can drive or I can pay
[11:43:36] <gregcnc> Ø40mm, 640RPM, 1.25mm DOC, 0.1mm feed is about 1 HP in EN19
[11:46:05] <gregcnc> where on the planet are you? https://www.cnczone.com
[11:46:22] <CNC_Brian> Gatwick area
[11:46:31] <CNC_Brian> UK
[11:48:25] <CNC_Brian> Maybe my feed rate is too high.
[11:48:51] <gregcnc> what is it?
[11:49:04] <CNC_Brian> I guess with 2 belts I loose some HP also
[11:49:10] <gloops> maybe the tool as well
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[11:54:56] <gregcnc> 1HP just isn't much power I cut 4140 on my manual lathe with a 1HP motor all the time, but rarely bother trying to take more than .02" per pass
[11:55:45] <gloops> i swapped 2hp for 1 hp on mine, never stalled the motor
[11:58:51] <gregcnc> gloops FYI, to take a 15mm cut on the 40mm bar 1HP is about 50RPM
[11:59:43] <gloops> ahh see, thats what i said - low rpm
[11:59:58] <gregcnc> but nothing gets done faster
[12:00:12] <gloops> throw in a cast iron pulley about 2 foot accross like mine, you wont stall
[12:00:22] <gregcnc> and the tool and machine loads are much greater
[12:01:23] <gloops> just have to take his time wont he, get a stop set up and keep it running back and forth while he does something else
[12:04:14] <gloops> might be quicker to mill it to rough size
[12:04:37] <gregcnc> why
[12:08:14] <gloops> bigger cut possible?
[12:09:58] <gregcnc> only if the spindle is more than 1HP, and cutting strategy is such that it's "in the cut" as much as a lathe
[12:10:24] <gloops> well to rephrase - any access to a large milling machine?
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[12:49:07] <fragalot> Hi
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[13:58:37] <gloops> there are some shortcomings with fusion 360s voronoi pattern generator
[14:00:20] <gloops> mainly, there doesnt seem to be any way to edit or change a sketch once its made
[14:27:13] <miss0r|office> diverdude: I'm in
[14:27:54] <miss0r|office> goodevening gloops
[14:28:47] <fragalot> miss0r|office: did you hack the gibson?
[14:29:11] <miss0r|office> fragalot: pardon?
[14:29:19] <fragalot> "I'm in"
[14:29:25] <miss0r|office> meh
[14:29:28] <miss0r|office> :]
[14:29:39] <miss0r|office> fragalot: Today I did something I thought I would never do
[14:29:49] <miss0r|office> I handed in a relay coil for re winding
[14:29:59] <fragalot> o.O
[14:30:05] <miss0r|office> Yeah
[14:30:35] <miss0r|office> it has 10 seprate contact sets: 5 NO and 5 NC
[14:30:39] <miss0r|office> 110v ac
[14:30:51] <miss0r|office> and I can't fit more than one relay in that spot
[14:31:00] <miss0r|office> Plus; I needed a replacement yesterday
[14:32:54] <fragalot> you have re-wiring services that do time travel?
[14:33:07] <miss0r|office> pretty close
[14:33:23] <gloops> evening
[14:33:27] <miss0r|office> well, even *if* I found a replacement relay, chances are it would take more than two days for it to get here
[14:35:03] <fragalot> with the luck I have it'd take more than two days for a quote request to get looked at
[14:35:07] <miss0r|office> fragalot: So I am probably looking at a 500eur bill for doing a coil that measures 30x30x25ish mm :)
[14:35:37] <miss0r|office> hehe. Well, I was promised they'd have a look tomorrow & finish it tomorrow, should I accept the price
[14:36:31] <fragalot> neat. ):
[14:38:46] <miss0r|office> fragalot: I found something realy annoying about my cnc retrofit..
[14:39:13] <miss0r|office> the 'tube' that has the flexible hose mounted to it on the controller side
[14:39:22] <miss0r|office> well.. the steel pipe I guess. not tube
[14:39:41] <miss0r|office> the inner diameter of that does not allow for me to take the cables out with the plug still attached.
[14:40:21] <miss0r|office> Which is reasonably close to a worst case scenario
[14:43:38] <fragalot> cut it in half & add hinges to swing it open :P
[14:44:13] <CaptHindsight> miss0r|office: as a competitive quote I'll do it for 2keur and have it for you in a week
[14:44:13] <miss0r|office> Thought about it :D
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[14:44:43] <fragalot> i'll hand-wrap it for you in about a week
[14:44:50] <fragalot> not including lead-time for me to purchase the wire
[14:44:54] <miss0r|office> CaptHindsight: I think you've lost :) but thanks
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[14:45:30] <miss0r|office> ewell, arent you the helpful bunch :)
[14:45:34] <CaptHindsight> or 3000eur and ready sometime in Nov with 100 year warranty
[14:46:15] <fragalot> CaptHindsight: not to be confused with "lifetime" warranty
[14:46:25] <fragalot> where "lifetime" means the lifetime of the part, not yours.
[14:46:50] <CaptHindsight> the 100 year is longer than lifetime, the "best" deal
[14:47:20] <miss0r|office> hehehe.
[14:47:31] <miss0r|office> CaptHindsight: Make that 300eur and tomorrow, and you've got a deal
[14:47:52] <CaptHindsight> I gave someone a 100 year warranty on some aluminum plate once
[14:48:39] <miss0r|office> "does not apply to humid environments"
[14:48:52] <CaptHindsight> Fedex white glove service next day to you might be $2k
[14:49:44] <miss0r|office> Which is a price I am willing for you to pay :)
[14:49:56] <CaptHindsight> I'd be honored
[14:50:05] <miss0r|office> haha
[14:50:29] <miss0r|office> Not to mention me needing to send you the part to be recoiled
[14:50:48] <CaptHindsight> you can just describe it over the phone
[14:51:01] <miss0r|office> 3D print that bugger
[14:51:10] <CaptHindsight> coil made with wire in kinda uh donut shape
[14:52:40] <miss0r|office> Trouble is, it wound around a bakelite(?name spell?) casting
[14:53:20] <gregcnc> this printer is tempting http://a.co
[14:55:29] <miss0r|office> I wonder how accurate that printer is
[14:57:13] <gregcnc> not sure. seems several units use the same lcd
[14:58:06] <miss0r|office> FOr me to even consider a 3D printer, it bette rbe accurate
[14:58:16] <CaptHindsight> Fedex overnight is only $125, but it gets there Friday :(
[14:59:20] <CaptHindsight> gregcnc: depends on the resin but <1%
[14:59:56] <CaptHindsight> if you know how much shrink the resin has you can adjust for that when printing or in CAM
[15:00:19] <gregcnc> have they hashed out patents or is this one expired?
[15:01:20] <CaptHindsight> expired, MSLA, LCD with a 405nm led behind it
[15:01:52] <CaptHindsight> really inefficient since you lose most of the energy in the LCD
[15:02:59] <CaptHindsight> LCD inactive regions first, then by the red and green dyes in the active area, then bye the blue dye (450nm) in the active pixel region used for printing
[15:03:09] <CaptHindsight> bye/by
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[15:04:15] <gregcnc> i guess there are no monochrome lcd today?
[15:04:36] <CaptHindsight> there are, but not cheap and small
[15:05:07] <CaptHindsight> so they just use whatever cheap 1920 x 1080 RGB LCD
[15:05:52] <CaptHindsight> but hey who cares about 98% of the 50W or 25W 405nm led going to waste
[15:06:08] <fragalot> if it wasn't for miss0r|office I'd have a moai printer
[15:06:34] <fragalot> instead he twisted my arm and I wound up with a schaublin claiming half of my shed space
[15:06:34] <miss0r|office> fragalot: You're welcome
[15:06:37] <fragalot> :P
[15:06:44] <gregcnc> I wonder what energy usage is compared to fdm
[15:06:56] <CaptHindsight> was thinking drinking bet
[15:07:08] <fragalot> gregcnc: depends on if you have a heated bed and / or build chamber
[15:07:22] <gregcnc> so they're close
[15:07:35] <CaptHindsight> 405nm LED and one stepper vs three steppers and a heater/nozzle
[15:07:36] <fragalot> well your average hobby hot-end ranges from 20W to 50W
[15:08:01] <CaptHindsight> 50um res vs 300um
[15:08:15] <CaptHindsight> also print speed
[15:08:29] <CaptHindsight> the MSLA is much faster so power over time is less
[15:09:01] <fragalot> but you do need alcohol to rinse the parts after
[15:09:10] <CaptHindsight> 10 seconds per 100um Z layer 19cm x 10cm
[15:09:43] <fragalot> FDM is nice for those quick prints you just want to pop loose & use
[15:09:53] <CaptHindsight> ethanol is what $10/gal (4L)
[15:10:01] <fragalot> literally anything else is nice for print quality if you don't mind the post processing
[15:10:52] <CaptHindsight> alcohol rinse takes seconds
[15:11:08] <fragalot> curing the part takes longer
[15:11:25] <CaptHindsight> post cure?
[15:11:26] <miss0r|office> I still feel like 3D printers are best suited for middle aged single men living in their parents basement.
[15:11:28] <fragalot> and you have the resin still in the tank
[15:11:37] <fragalot> miss0r|office: haha
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[15:11:46] <fragalot> CaptHindsight: I'm not saying it's a bad tech, don't get me wrong
[15:11:56] <CaptHindsight> yeah, you should pout the resins back into a bottle...
[15:12:04] <CaptHindsight> pout/pour
[15:12:15] <CaptHindsight> that can take seconds to a minute
[15:12:43] <miss0r|office> I still have 15 minuts before the wife gets home, to make it look like I spend two hours cleaning. See you around ;)
[15:12:43] <CaptHindsight> or leave it in the vat if you use in the next week or four
[15:13:00] * fragalot uses his FDM printer maybe every other month
[15:13:21] <fragalot> just click "print", do something else whilst it does it's thing, and hwen it's done, just pick up the part off of the print bed & done
[15:13:28] <fragalot> no clean up, no setup, it's just done
[15:13:29] <CaptHindsight> oh, drag out the vacuum, leave towels/rags scattered about, build up a thin layer of sweat
[15:13:31] <fragalot> the quality is crap
[15:13:33] <fragalot> but done
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[15:14:03] <gregcnc> i keep thinking about small aluminum castings, not that I cast anything now
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[15:17:16] <CaptHindsight> investment cast or sand?
[15:17:24] <CaptHindsight> gregcnc: ^^
[15:18:10] <gregcnc> investment. you've mentioned a water soluble resin in the past
[15:18:13] <CaptHindsight> how about a sand mold printer?
[15:18:41] <CaptHindsight> yeah, water soluble SLA resin
[15:19:36] <CaptHindsight> print pattern, coat with investment, dry few minutes, hot water rinse pattern out, dry, cast
[15:19:49] <CaptHindsight> or...
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[15:20:12] <gregcnc> that's what i'm thinking
[15:20:54] <CaptHindsight> inkjet sand mold (2 pcs), bake few minutes, pour/cast
[15:22:11] <gregcnc> would probably also work
[15:23:22] <CaptHindsight> the sand is precoated with heat set resin, so you just inkjet the surfaces of the molds vs the entire volume of sand
[15:24:07] <CaptHindsight> inkjet the shell so it cores rapidly, the rest sets while baking for a few minutes
[15:24:21] <CaptHindsight> then the mold is ready for casting
[15:26:02] <gloops> yes get the green sand
[15:26:23] <gloops> or grind some kitty litter up and mix with washed sand
[15:28:53] * fragalot needs to find himself some good impact resistant flat head bits
[15:29:20] <fragalot> all the ones i've tried so far either snap or get torqued when used in an impact driver to get rusty ones loose
[15:31:08] <gloops> question of technique
[15:31:47] <fragalot> not much technique to fitting the correct size bit in the slot & slowly increasing the grunt of the impact driver
[15:32:01] <fragalot> it's just getting harder to find not-shitty bits
[15:32:17] <gloops> patience, you should never use enough force to smash the tip
[15:32:38] <fragalot> the old ones I had lasted for years
[15:32:44] <fragalot> all the new ones just go to shit with the first use
[15:32:49] <fragalot> ergo, I'm blaming the bits
[15:33:19] <gloops> blame the chinese
[15:33:56] <gloops> well, im being urgently called away to go shopping for lillies, god help me
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[15:35:51] <fragalot> who the hell goes shopping for lillies after 8pm :d
[15:35:56] <CaptHindsight> probably why all the bits I see come in packs of 12 for a few $
[15:36:10] <fragalot> CaptHindsight: yea...
[15:36:21] <gregcnc> i'm getting very disappointed with the quality of anything
[15:36:31] <fragalot> I'm perfectly happy to pay €10 for a single bit if it's going to last the same amount of time the old black & decker set I had
[15:36:46] <fragalot> (ie. about a decade before I had to retire them)
[15:36:46] <gregcnc> was trying to find a card reader that didn't suck, so many reviews said they die after a few months
[15:36:52] <CaptHindsight> I've been snapping 1-2 teeth off of phillps screw drivers
[15:37:20] <CaptHindsight> USB hubs are similar
[15:37:32] <CaptHindsight> few months till death of a to all ports
[15:37:37] <fragalot> oh god
[15:37:38] <gregcnc> but why
[15:37:43] <fragalot> dewalt is selling "impact ready" bits
[15:37:49] <fragalot> which reminds me of the whole "HD ready" debacle
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[15:39:42] <fragalot> guess I'll try wiha
[15:41:34] <gregcnc> sls mold printer the slow way I guess https://youtu.be
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[15:44:13] <CaptHindsight> Chinese galvo heads are way down in price
[15:45:13] <CaptHindsight> cheap glass laser tube vs RF
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[16:01:06] <CaptHindsight> customer (potential) provides specs for machine with 1m^3 work area....
[16:01:44] <CaptHindsight> after receiving quote asks for another with 1m^2 x 3cm Z :)
[16:02:12] <fragalot> 3cm Z travel, or 3cm Z clearance?
[16:02:35] <CaptHindsight> same in this app
[16:02:44] <fragalot> I just got approval for us to purchase a Deckel FP42NC to solve a similar issue
[16:02:54] <jthornton> some corporate guy wants me to quote him on a
[16:02:55] <fragalot> need to clamp large objects but need short Z travel
[16:03:15] <jthornton> $35 card and fill out a bunch of paperwork to "get me into the system" lol
[16:03:55] <CaptHindsight> jthornton: we go through that regularly, takes a month to get you into the "system"
[16:04:13] <CaptHindsight> no charge however, that sounds scammy
[16:04:45] <jthornton> he had a legit mesa card number... dunno
[16:05:41] <fragalot> I typically just send the order with a 0 price to get new suppliers into our system
[16:05:42] <CaptHindsight> there are services out there that charge to put you into lists
[16:05:51] <fragalot> then let finance solve the problem afterwards :D
[16:06:23] <jthornton> lol
[16:06:30] <CaptHindsight> they make a business out of taking your info and entering it onto a list
[16:06:41] <jthornton> didn't know that
[16:06:55] <fragalot> CaptHindsight: similarly, you can get your "scientific" paper published in predatory publishers
[16:07:09] <fragalot> just so you can claim your product has been checked by a scientific paper
[16:07:12] <fragalot> which is "peer reviewed"
[16:07:29] <CaptHindsight> peers meaning Ed and Frank at the bar
[16:07:50] <CaptHindsight> or as in peer over the fence at your paper
[16:07:57] <fragalot> peer at the payment, lol
[16:09:09] <CaptHindsight> it is so bad now that even sam.gov makes you fill out a notarized form with the contact to modify and of your info
[16:09:38] <CaptHindsight> there are scammers that charge people to manage your sam.gov info
[16:09:56] <CaptHindsight> and/any
[16:10:31] <fragalot> yup, my boss helped me get my ESTA form filled out via one of those
[16:10:35] <fragalot> difficult to get rid of 'm
[16:11:00] <fragalot> even if you never clicked "submit" when you noticed the due amount was higher than it should be
[16:11:54] <CaptHindsight> it's near daily we get offers for some seminar on how to get guberment contracts
[16:12:12] <CaptHindsight> if they are so great why aren't they getting the contracts?
[16:12:26] <fragalot> xD
[16:12:41] <fragalot> getting .gov contracts is easy
[16:12:44] <CaptHindsight> it's like those seminars on getting rich in real estate
[16:12:46] <fragalot> step 1) be cheaper than others
[16:12:51] <fragalot> step 2) corruption.
[16:14:58] <diverdude> For arduino, if i want to be 100% sure that Serial.println() is sent at the time when the program reaches that line, and not sometime later, how can i ensure that? For example i do Serial.println(gcode); and nothing is printed until later. I have tried inserting delay(50) after, but it did not help
[16:15:14] <fragalot> you can't
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[16:15:24] <diverdude> fragalot: hmm ok. why is that?
[16:15:39] <fragalot> because the serial communication to your laptop is being buffered by windows
[16:16:05] <CaptHindsight> friends don't let friends use winders for CNC
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[16:16:16] <fragalot> so the arduino probably sends out the serial data exactly when you ask it to
[16:16:23] <fragalot> but that doesn't mean that windows will show it at that time
[16:16:26] <diverdude> fragalot: hmm ok - i am using linux...but probably same issue
[16:17:35] <CaptHindsight> <-- only interested in helping if STM32 is used or i.mx(x)
[16:17:57] <fragalot> agreed, STM32's are the way to go :D
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[16:34:31] <JT-Shop> looks like the chap is with Harris Corp and does government work... what a pain in the ass for $10
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[16:35:41] <fragalot> syyl: about to buy a used FP42NC. Any pointers what to look out for?
[16:36:07] <fragalot> syyl: dialog controls have been replaced with heidenhein
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[16:43:28] <syyl> check if it has been rebuilt
[16:43:31] <syyl> if so: run
[16:43:49] <syyl> from factory the y-ram was scraped with a bow in it
[16:43:54] <syyl> to accomodate gravity
[16:44:04] <syyl> most rebuilders just grind/scrape them straight
[16:44:18] <syyl> and the machine will never be square in y, when moved out very far
[16:44:41] <fragalot> our application only needs the Y to move about 5cm, but that is VERY good advice
[16:44:48] <fragalot> and i'm glad I asked :D
[16:44:52] <syyl> plus i wouldnt want it because it has no quill
[16:45:26] <fragalot> the main application we're getting it for is to poke holes in electrical enclosures (stainless)
[16:45:32] <syyl> wow :D
[16:45:36] <syyl> talk overkill :D
[16:45:42] <fragalot> yup
[16:45:50] <fragalot> we've looked at almost all the other options
[16:45:59] <syyl> but if it gets the job done
[16:46:01] <syyl> go for it
[16:46:03] <fragalot> and there are some dedicated machines, for example from Rittal, but when I went to look at that thing
[16:46:06] <fragalot> it is.. garbage.
[16:46:13] <syyl> i heard there are some issues with the head
[16:46:18] <syyl> they can run hot
[16:46:23] <fragalot> 120k entry price, and it needs to cut at 0.04m/min in stainless
[16:46:26] <fragalot> or it shits the bed
[16:46:35] <syyl> but i have no special knowledge on that
[16:46:45] <fragalot> alright
[16:46:54] <syyl> and as with all deckel machines
[16:47:00] <syyl> check the central lubrication
[16:47:08] <syyl> and if the ways are gauged
[16:47:10] <syyl> uhm
[16:47:11] <syyl> not gauged
[16:47:12] <fragalot> we're not going to have a huge spindle time so I don't think the spindle running hot is going to be an issue
[16:47:13] <syyl> whats the word
[16:47:20] <fragalot> damaged :P
[16:47:20] <syyl> galled
[16:47:41] <fragalot> how easy is it to see the ways of an FP42NC?
[16:47:44] <syyl> when those machines are used for machining a lot of small details, they totaly tend to gall the ways
[16:47:48] <fragalot> last time I looked they were completely hidden
[16:48:01] <syyl> you might have to move the bellows in X
[16:48:09] <syyl> on y you can just move the ram completely out
[16:48:12] <syyl> in Z, no idea :D
[16:48:15] <fragalot> :D
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[16:59:53] <Deejay> gn8
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[17:19:08] <pink_vampire> someone here can help me with tkinter
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[17:21:48] <jthornton> we just ask the question not ask to ask
[17:24:04] <pink_vampire> I'm trying to edit the tkinter interface and make it work with media keys (Mute and Explorer) instead of shift for max jog
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[17:26:19] <pink_vampire> I also tried to remap the as Control ans Shift, and it worked fine all over, but not in linux cnc. it just ignore it.
[17:29:42] <jthornton> that's above my pay grade
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[18:29:41] <laminae_> Hey guys, i picked up these parker stages and i'm looking to put them into a machine for cutting alum, carbon plate and g10 plate. For the last two i definitely know i will need to use flood cooling for tools and inhalation hazard and i would love to hear any suggestions
[18:29:44] <laminae_> https://media.discordapp.net
[18:30:27] <laminae_> It seems like most readily available material comes in 400mm x 800mm for large plate in carbon
[18:31:58] <laminae_> This is my cnc router build, some minor additions to this since but enough to work from, i could take the two identical stages and replace the y and then put the remaining stage in z and still have to pick up another actuator at some point
[18:32:18] <laminae_> Or do a whole new build
[18:32:22] <laminae_> https://imgur.com
[18:32:36] <laminae_> Any thoughts or suggestions are greatly appreciated
[18:33:24] <laminae_> worth noting, current cutting area on the cnc router is 500mm x 1000mm and the parker actuators are 16in travel
[18:36:43] <laminae_> Additional consideration, my research thus far seems to indicate i will need slower moving spindle for alum than the carbon and g10 but i'm having difficulty identifying one that will suit my needs, too many options and a lot of them seem to be poorly made knockoffs of a superior product and i'm not opposed to paying a bit for a quality tool
[18:38:43] <pink_vampire> laminae_: amazing stuff
[18:39:38] <laminae_> The parker stages? i know i am extremely impressed with them
[18:40:04] <laminae_> Waaaaay better than poly carbonite bearings
[18:40:25] <pink_vampire> where did you got them?
[18:40:28] <pink_vampire> also see PM
[18:40:58] <laminae_> A friend of mine works at a industrial 3d printing llc and they upgraded machines
[18:41:21] <laminae_> He gave me the whole pile for 600 bucks and a little bit of cncing him some small stuff
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[19:25:34] <CaptHindsight> laminae_: are the stages with ballscrews or lead screws?
[19:26:46] <Tom_L> evening peeps
[19:26:58] <laminae_> Ballscrews
[19:27:00] <CaptHindsight> the one in the middle without the cover looks like a ballscrew
[19:27:12] <laminae_> I actually have the par tnumbers, one sec
[19:27:35] <CaptHindsight> laminae_: do you have the motors and drives as well or just the motors?
[19:28:06] <laminae_> Just the motors and those motors definitely aren't up to cutting
[19:28:19] <laminae_> these were used for optical alignment
[19:28:23] <CaptHindsight> possibly glass scales on the sides of a few of the drives?
[19:28:28] <laminae_> So i'm going to need to put something bigger on there
[19:29:00] <CaptHindsight> the parker ball screws can move pretty quick and handle some torque
[19:29:37] <CaptHindsight> whats the pitch? 5mm?
[19:30:03] <laminae_> 106041S_10AELH 106041C_10E 106041C 406101S 506161_LHO_B 106041C_10EIHC 506016_STES 106004CTEPL
[19:30:12] <laminae_> in order from left to right
[19:30:14] <CaptHindsight> I have used lots of Parker
[19:30:50] <laminae_> I'd jave to find the datasheet but that's in the neighborhood
[19:32:16] <laminae_> the small ones definitely aren't rated for machining
[19:32:31] <laminae_> I think i might use the motors on a 4 axis hotwire though
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