#robotics Logs

Dec 13 2014

11:52 rue_more why do people persist in making their stl files in stupid orientations?
12:00 Tom_itx good morning
12:01 Tom_itx the center is supposed to be rubber
12:06 Tom_itx http://www.thingiverse.com/thing:552885
12:06 rue_shop3 I know, reprap people make everything out of plastic
12:07 rue_shop3 hah, if 10 years ago wildmage had that
12:07 Tom_itx yup
12:07 Tom_itx http://www.thingiverse.com/thing:589731
12:07 Tom_itx metal printing?
12:08 rue_shop3 I know, reprap people make everything out of plastic
12:08 rue_shop3 :)
12:09 Tom_itx if i were to make one, it would be because i had a constructive need for it
12:09 Tom_itx not just to make toys or more repraps
12:09 rue_shop3 with a lack of needing to make things I'm making things I might need
12:10 Tom_itx have you tried bridges yet?
12:10 rue_shop3 kinda
12:11 rue_shop3 I'm fighting problems with temperature
12:11 Tom_itx too much or too little?
12:11 rue_shop3 well if I knew then I'd have it solved by now
12:12 rue_shop3 everyone says 180c for PLA, but at 180c is just jams up in the extruder
12:12 Tom_itx check your sensor
12:12 rue_shop3 it looks ilke I have to be about 200-220c to print
12:12 Tom_itx maybe it's off
12:12 rue_shop3 no I'm talking real temp
12:12 rue_shop3 it is
12:12 rue_shop3 I have a K thermocouple I'm using
12:12 Tom_itx thermal properties of your tip are different
12:13 Tom_itx cause you went off on your own
12:13 rue_shop3 or the plastic I have is out to lunch
12:13 Tom_itx dry it out
12:13 rue_shop3 also, the plastic sat for 2.5 years
12:13 rue_shop3 (in a bag)
12:13 Tom_itx it's full of moisture
12:13 rue_shop3 it also turns out its ABS that has the moisture issue
12:13 Tom_itx i can practically guarantee it
12:14 Tom_itx http://www.thingiverse.com/thing:537583
12:14 Tom_itx cute
12:14 rue_shop3 I suppose I dont ahve to get it that hot if I let it sit a while
12:14 rue_shop3 thats crazy
12:16 Tom_itx http://www.thingiverse.com/thing:531481
12:17 rue_shop3 again, the makers have not set up the stl files for a reprap...
12:18 Tom_itx http://www.thingiverse.com/thing:517073
12:18 Tom_itx you could find a use for that
12:18 rue_shop3 there is soemthing mising for that transmision
12:19 rue_shop3 I'm thinking of making printed parts for arm10
12:19 rue_shop3 armyofevilrobots, I nonally found one of the power supplies for you, I put it aside!
12:20 rue_shop3 Tom_itx, I wonder
12:20 Tom_itx http://www.thingiverse.com/thing:517073
12:20 Tom_itx wtf is that?
12:20 rue_shop3 you can take a dxf and generate an mcode file right?
12:20 Tom_itx yes
12:20 Tom_itx more or less
12:20 rue_shop3 as the half gears go around it pulls the rack back and forth
12:21 rue_shop3 I need to make a gcode file to test the extrusion width
12:21 Tom_itx see, mine does a path
12:21 rue_shop3 its the same as my plotters pen width
12:21 Tom_itx yours does layers
12:21 rue_shop3 yea, I need tool on centre
12:21 Tom_itx i can make a path any width you want
12:21 Tom_itx any spacing apart you want
12:21 rue_shop3 I need to know the extruded plastic actual width
12:22 Tom_itx ----------
12:22 Tom_itx |
12:22 Tom_itx -----------
12:22 Tom_itx zig zag
12:22 Tom_itx how long?
12:22 Tom_itx 1"?
12:22 rue_shop3 so, same as my plotter, you make an array of lines with decreased spacings, the first two that touch tell you the line width
12:22 Tom_itx 12 miles?
12:22 rue_shop3 | | | | ||
12:22 Tom_itx doubling each increment?
12:23 Tom_itx or 1.5x?
12:23 rue_shop3 just an inch long or so, starting at about 2mm spacing and going down to
12:23 rue_shop3 .2mm
12:23 Tom_itx i deal in inch
12:23 rue_shop3 in .1mm steps
12:23 rue_shop3 yea
12:23 Tom_itx so convert that and tell me. i'm too lazy to figure it out
12:23 rue_shop3 I can make a dxf, I cant convert it
12:23 Tom_itx i can
12:24 rue_shop3 sure
12:24 Tom_itx i can make one too
12:27 Tom_itx you want it to zig in x or y?
12:27 rue_shop3 hmmm this is laborious to draw by hand, maybe I should write a program to generate the gcode file
12:27 Tom_itx how many steps do you want?
12:27 rue_shop3 dosn't matter which way it goes
12:27 rue_shop3 from 2mm down to 0.2mm
12:27 Tom_itx what's that in inch?
12:27 rue_shop3 in .1mm steps
12:28 rue_shop3 0.078740157 to 0.0078740157 in steps of 0.0039370079
12:28 Tom_itx .003"?
12:28 Tom_itx .004?
12:29 rue_shop3 has to be kinda accurate or I wont get the right answer
12:29 rue_shop3 I'm playing with a dxf here....
12:34 rue_shop3 oh, parallel line tool
12:34 rue_shop3 that makes this easier
12:35 rue_shop3 tom, want my dxf?
12:35 Tom_itx so the first one is .003937 apart, the 2nd one is .007874 apart
12:35 Tom_itx sure
12:35 Tom_itx wait
12:35 Tom_L ok
12:36 rue_shop3 I suppose I coudl try dccing?
12:36 Tom_L i suppose
12:36 Tom_L mine is probably off
12:37 Tom_L try it
12:37 rue_shop3 na
12:37 rue_shop3 not wroking
12:37 rue_shop3 I blame the routers
12:37 Tom_L email it
12:37 rue_shop3 I'll post it
12:38 Tom_L you'll have to set the z yourself
12:39 rue_shop3 http://ruemohr.org/~ircjunk/doc/pentest.dxf
12:39 rue_shop3 oh, could you jsut make z 0.3mm?
12:40 rue_shop3 0.011811024inch
12:43 Tom_L couldn't translate it
12:43 Tom_L must be lost in the post
12:45 Tom_itx gimme 1 sec and i'll have it
12:47 rue_shop3 slicer ignores anything thinner than 0.5mm, so it seems the only way to do this is by hand
12:47 rue_shop3 being that I need it to be 1 trace
12:48 Tom_itx i'll post a pic and you can ok it
12:53 GuShH https://www.youtube.com/watch?v=6o6Hh6tQj2w
12:59 Tom_itx ok i got dxf
12:59 Tom_itx err gcode
13:01 Tom_L http://tom-itx.no-ip.biz:81/~webpage/rue/reprap/printtest.jpg
13:01 Tom_L http://tom-itx.no-ip.biz:81/~webpage/rue/reprap/printtest.txt
13:01 Tom_L edit your feed etc
13:01 Tom_L z should be ok
13:02 Tom_L it's .0118
13:02 Tom_L probably move the G28 and G00 at the bottom too
13:04 Tom_L it zig zags
13:04 Tom_L if you want each line to retract and print lemme know
13:05 Tom_L lower left is X0 Y0
13:05 Tom_L stepover is .003937 multiples each pass
13:15 Tom_itx i could post that in metric if you need but it would take a bit
14:26 armyofevilrobots rue_shop3: I am helping somebody move right now, but we should be done shortly. Are you gonna be around for a bit today? I may be laggy responding (helping up the street, just back for a moment).
15:28 rue_shop3 sorry, visitors
15:28 rue_shop3 armyofevilrobots, looks like I have a bunch of visitors in and out for the rest of the day, drop in anytime
15:28 armyofevilrobots Alright. I'll head over. Thx man.
15:29 rue_shop3 Tom_itx, its not jsut a metric/imperial switch then eh?
15:29 rue_shop3 armyofevilrobots, excelent!
15:29 rue_shop3 Tom_itx, I have to hand edit anyhow, I have to add the extruder axis
15:30 rue_shop3 oo yea
15:33 Tom_itx did it do ok?
15:35 rue_shop3 :0 not htere yet
15:35 rue_shop3 I have to work out what to do with the extruder
15:35 Tom_itx i can redo it if needed
15:35 Tom_itx can't help with that
15:35 rue_shop3 and the other commands to init the machine
15:35 Tom_itx just copy something from another file
15:38 rue_shop3 yup
15:39 Tom_itx if you need metric though i can redo it
15:39 Tom_itx all i gotta do i think is post it with a metric tool and it will show units in metric
15:48 Tom_itx rue_shop3, see what print_m.txt looks like
15:48 Tom_itx same directory
15:48 Tom_itx should be metric
15:49 Tom_itx doesn't look right though
15:50 Tom_itx no, don't use that one
15:53 rue_shop3 tom, it occurs to me that I need it in metric :)
15:55 Tom_itx i can fix it
15:55 Tom_itx i gotta run an errand then i'll post it in metric
15:55 Tom_itx that metric file i put up is crap though don't use it
15:58 Tom_itx bak in a few..
15:58 Tom_itx gimme the metric dimensions again...
16:58 Tom_itx ok that looks better
16:58 Tom_itx had to remember where the 'metric' switch was
16:58 Tom_itx it's in the post, not the tool file
17:10 Tom_itx ok both .txt files generated from the same model
17:10 Tom_itx one is inch one is metric
17:14 Tom_itx if you need more decimals lemme know
20:10 robotustra hey
21:02 Tom_itx ok the connectors didn't like RoHs reflow heat
21:57 Tom_itx well i got the 3.3v reg replaced but the 1.2 was a no go
21:57 Tom_itx or something else is wrong with the board
21:57 Tom_itx i only get ~.6v on it
21:58 Tom_itx http://tom-itx.no-ip.biz:81/~webpage/rue/7I43.jpg
21:58 Tom_itx we're talking about replacing U6 & U10
21:58 Tom_itx U6 was the 1.2v reg
21:59 Tom_itx oh and U9... but it was easy
23:41 rue_shop2 hey, sorry, jester is over, were trying to get an SD card working on an arduino
23:41 rue_shop2 Tom_itx, maybe a capacitor shorted?
23:42 rue_shop2 maybe another chip is shorting the 1.2 bus
23:43 orlock rue: cracked j head body, JB weld is setting
23:43 rue_shop2 how the hell you do that?
23:43 orlock i was re-assembling it after checking for blockages
23:43 orlock too much torque i guess
23:44 rue_shop2 :/
23:44 rue_shop2 good one
23:44 rue_shop2 picture?
23:49 RifRaf orlock, so you printing already?
23:50 rue_shop2 no he's breaking it
23:50 RifRaf just brought 3 more i3's back with me
23:51 RifRaf might replace a few bearings and sell em though