#linuxcnc Logs

Oct 10 2017

#linuxcnc Calendar

01:40 AM IchGucksLive: morning from germany
02:25 AM Deejay: moin
02:25 AM IchGucksLive: ;-)
03:14 AM jelly-home is now known as jelly
06:24 AM Tom_L: 45°F
06:24 AM jthornton: nice 71F here
06:25 AM Tom_L: cool front came in last evening
06:59 AM jthornton: I don't think it will make it here
07:15 AM jelly-home is now known as jelly
07:45 AM rebecca: i do my design/art in inkscape and i'm having problems with broken/open shapes when importing (in various formats) into cad/cam programs. anyone know a good fix for this?
08:05 AM IchGucksLive: hi from Germany
08:05 AM IchGucksLive: rebecca: still online
08:05 AM rebecca: hi IchGucksLive :)
08:06 AM IchGucksLive: hi im in germany
08:06 AM IchGucksLive: what is your main issue in in cscape
08:07 AM IchGucksLive: rebecca: did you follow my tuttorial on shaping https://www.youtube.com/watch?v=Rv1v5qj7Rek
08:07 AM rebecca: i might have found a work around.. set minutely thin stroke thickness and Stroke to Path the problematic shapes. then break apart the inside/outside shapes created and delete one.
08:07 AM IchGucksLive: rebecca: can you post the image
08:07 AM IchGucksLive: or is it n the web available
08:08 AM IchGucksLive: rebecca: once you got the DXF you shoudt go via LIBRECAD/Qcad and make the Gcode maybe in sheetcam
08:09 AM rebecca: o
08:09 AM rebecca: oops
08:09 AM IchGucksLive: rebecca: if the image is without any licence you can post it here http://pasteall.org/pic/ its the blender feeepost side
08:10 AM rebecca: i'm trying to stick with Heekscad
08:10 AM IchGucksLive: i will help ypou if yoiu want
08:10 AM IchGucksLive: i also made the tutorials in heeks
08:10 AM rebecca: thanks for the video. i have actually found another of your videos useful recently :D
08:10 AM IchGucksLive: https://www.youtube.com/channel/UCmwhCL92ZQRSVqFe3jGwJSQ/videos
08:10 AM rebecca: just testing if my work-around helps now
08:11 AM IchGucksLive: it is quite easy to get shapes from image
08:12 AM IchGucksLive: rebecca: scroll down here http://www.schweden-feuer.de/feuersauelen.htm
08:12 AM rebecca: hmmm, that upload website only works with raster images
08:12 AM rebecca: i'm working with a vector
08:13 AM IchGucksLive: if you got a vector svg you can use linuxcnc direct NATIVCAM
08:14 AM IchGucksLive: from 2.7.9 it is inside the System
08:14 AM IchGucksLive: rebecca: but export the svg to DXF
08:14 AM IchGucksLive: in icscape
08:14 AM IchGucksLive: inkscape
08:15 AM rebecca: i have tried dxf already
08:15 AM rebecca: it's okay. i just have 1 shape left that is causing problems
08:15 AM rebecca: i think i can make this work
08:16 AM IchGucksLive: ok but you also can post a simple screenshot with full shape in view
08:16 AM IchGucksLive: rebecca: best on dxf is A to go via Sheetcam that clöoses all
08:16 AM IchGucksLive: B via Qcad and reform and close the shapes
08:17 AM rebecca: sure, i'll show you a screenshot
08:17 AM rebecca: but i'm trying to make my current toolchain work. i don't really have time in this instance to learn something new
08:17 AM IchGucksLive: its not learning
08:17 AM IchGucksLive: its the best way to do a toolchain
08:18 AM rebecca: https://i.imgur.com/sE32qWh.png
08:18 AM IchGucksLive: you do not need to learn inkscape as it is only 4 klicks to do
08:19 AM rebecca: ok
08:19 AM IchGucksLive: Vcarve
08:19 AM IchGucksLive: or outbond miling
08:20 AM rebecca: the design has been optimised for a 2mm endmill
08:22 AM IchGucksLive: i woudt go vcarving 60Deg
08:23 AM rebecca: yeah, i understand the benefit of vcarving, allowing much tighter corner radius
08:24 AM rebecca: but that's for another project. this is a gift i have to make asap :)
08:25 AM rebecca: okay. i think i have finally fixed all the broken shapes :D
08:27 AM rebecca: thanks for your help IchGucksLive
08:28 AM rebecca: it's nice to meet the person behind those youtube videos :)
08:28 AM IchGucksLive: ;-)
08:30 AM IchGucksLive: rebecca: you can test the gcode via camotics
08:31 AM IchGucksLive: to see how it will look
08:33 AM IchGucksLive: rebecca: like so http://pasteall.org/pic/index.php?id=119365
08:34 AM rebecca: nice :)
08:41 AM rebecca: i must learn some of these more powerful toolpath techniques soon
08:41 AM IchGucksLive: rebecca: what size are you expecting your part
08:41 AM rebecca: 440x112mm
08:41 AM rebecca: it's a sign for my Norwegian friends cabin :D
08:42 AM rebecca: engraved in oak of course!
08:43 AM rebecca: the tricky part is, i will be cutting it on a 3020 cnc. so i will need to machine in 2 parts
08:45 AM IchGucksLive: rebecca: almost done
08:46 AM rebecca: are you generating a toolpath from the screenshot i shared?
08:46 AM rebecca: you don't need to!
08:51 AM IchGucksLive: rebecca: http://pasteall.org/pic/index.php?id=119366
08:52 AM IchGucksLive: its 1.5mm Dept with V60deg
08:52 AM IchGucksLive: deaph
08:53 AM rebecca: nice, but the design is intended for pocketing out the letters rather than line engraving
08:53 AM IchGucksLive: so lets do pocketing
08:54 AM rebecca: you don't have to :)
08:56 AM IchGucksLive: nc is done making image
09:00 AM IchGucksLive: rebecca: http://pasteall.org/pic/index.php?id=119369
09:01 AM IchGucksLive: or the other way leve the letters uprards
09:01 AM IchGucksLive: i think this is better
09:01 AM rebecca: it didn't like the oak leaves :)
09:01 AM IchGucksLive: let me do it the other way
09:01 AM rebecca: i don't think i can stop you ;)
09:02 AM IchGucksLive: its fun
09:02 AM IchGucksLive: and i got some time as it is raining
09:12 AM IchGucksLive: my image is not optimised
09:12 AM IchGucksLive: so the cutter does not move inside
09:13 AM rebecca: ok
09:15 AM IchGucksLive: as i did it from screenshot :P
09:15 AM rebecca: ok :)
09:30 AM IchGucksLive: im off bye
11:43 AM narogon: could anybody help me with this? https://forum.linuxcnc.org/10-advanced-configuration/33396-5-axis-spindle-xyzb-table-a
11:46 AM hazzy: narogon: This sounds familiar, did you email me about this a while back?
11:47 AM narogon: nope
11:47 AM narogon: I wrote here some days ago
11:47 AM hazzy: ok, somebody had almost the exact same question
11:47 AM narogon: did you solve it??
11:49 AM narogon: my main problem is understand where the workspiece origin is
11:49 AM hazzy: no, but I did not try. We had a big storm so I lost power and internet for a few weeks right after. I had forgotten about the question until now
11:50 AM narogon: ohh i'm sorry to hear it, hope there is everything solved
11:51 AM narogon: I understand (more or less) the maths about rotation and translation matrix
11:51 AM narogon: and how to program the kinematics
11:51 AM narogon: my problem is I don't know completely where the workspiece origin is
11:52 AM narogon: and how to connect it to the A turn axis
11:52 AM hazzy: I don't know much about how the kinematics work, I am sure somebody on here does though
11:55 AM narogon: hazzy: I hope so I really need to make it
11:58 AM hazzy: narogon: I am trying to picture your machine. Does the spindle rotate about the B axis? Like the side to side rotation of a Bridgeport head?
11:59 AM narogon: It is a cartesian gantry
11:59 AM narogon: XYZ
11:59 AM narogon: and the spindle could rotate about Y axis (B)
12:00 PM narogon: the table rotates about a translated X axis (ly lz)
12:03 PM archivist: narogon, what are you going to make on it, I am wondering if the standard kins will do for you
12:04 PM narogon: laser cut
12:04 PM narogon: I need to interpolate in 5 axis and the movements must be coordinated
12:04 PM archivist: probably the standard 5 axis kins
12:06 PM narogon: the machine is like this https://image.slidesharecdn.com/fundamentalofroboticmanipulator-130919212144-phpapp01/95/fundamental-of-robotic-manipulator-37-638.jpg?cb=1379625856 but the spindle only rotates about Y (B)
12:06 PM narogon: and the table where the piece sits rotates about X
12:11 PM narogon: or like this http://linuxcnc.org/docs/ja/html/motion/5-axis-figures/Figure-10.png but it's the spindle who moves about XYZ
12:16 PM cradek: narogon: I don't have time to help you but I think this is correct kins for your machine: http://paste.ubuntu.com/25714795/
12:16 PM cradek: put your tool length along W in the tool table, since it rotates with the head (B)
12:16 PM cradek: bbl
12:21 PM IchGucksLive: hi from germany
12:21 PM narogon: thanks cradek, i'm going to test it
12:22 PM archivist: narogon, you can draw your machine and animate it in the vismach simulator http://linuxcnc.org/docs/html/gui/vismach.html
12:29 PM IchGucksLive: narogon: there are skins for many 5axis
12:29 PM IchGucksLive: narogon: is your setup one of this ? http://www.cnc-toolkit.com/support.html
12:31 PM IchGucksLive: narogon: here are the kinitics that fits the setups
12:32 PM narogon: i think is this one http://www.cnc-toolkit.com/VRAB.gif
12:32 PM narogon: but with some dimensions modified
12:33 PM narogon: could make the vismach model
12:33 PM IchGucksLive: there is one
12:33 PM IchGucksLive: load the SIM Vismach MAX
12:33 PM narogon: or this one http://www.cnc-toolkit.com/cnc_a3.gif but instead of C the table rotates A
12:36 PM narogon: where are the kinematics IchGucksLive?
12:36 PM IchGucksLive: they are in the system just load them
12:37 PM IchGucksLive: http://linuxcnc.org/docs/html/man/man9/maxkins.9.html
12:38 PM IchGucksLive: narogon: this is for the special https://github.com/machinekit/machinekit/blob/master/src/emc/kinematics/XYZACkins.c
12:39 PM narogon: mine is XYZAB
12:39 PM narogon: not rotates about Z
12:40 PM narogon: is similar to the last one of http://www.cnc-toolkit.com/support.html
12:40 PM IchGucksLive: you can some easy modyfi the script
12:41 PM narogon: cradek sent a modified one
12:41 PM narogon: http://paste.ubuntu.com/25714795/
12:41 PM narogon: i'm going to test it
12:42 PM IchGucksLive: oh he uses the W offsaet
12:47 PM narogon: It is easy to replace joints[8] to a halpin if it is needed
12:48 PM narogon: my doubts are about the offsets of the rotation axis A
12:48 PM narogon: and about some positions that have multiple kinematics solutions
12:51 PM IchGucksLive: it will only calculate the next
12:52 PM IchGucksLive: as you have in the CAM only one choice to position the tool
01:08 PM IchGucksLive: narogon: see the implementation of the axis offsets inside the scaresciins
01:19 PM IchGucksLive: CA burning down to the ground ?
01:19 PM IchGucksLive: 10 killed how in the western world can this happen
01:20 PM gloops: nah its only a few wood fires
01:20 PM IchGucksLive: ok valley 45deg hill and the firer will explode
01:20 PM IchGucksLive: the good wine is boiled
01:21 PM gloops: like the mayor of London said in 1666 'a woman could p*ss it out'
01:22 PM IchGucksLive: im off eating early the good chicken BBQ :D
01:24 PM gloops: well the chinese supplier refunded for ballscrews, i have found a UK producer of quality leadscrews though, next day delivery so im going with that
01:26 PM gloops: 10mm lead, 24mm - should be good for 400ipm
01:34 PM roycroft: fire starts right near a highly populated urban area at 10pm with unprecedented 100km/h winds
01:34 PM roycroft: that's how it happens
03:48 PM seb_kuzm1nsky is now known as seb_kuzminsky
04:08 PM Loetmichel: harhar... wife gifted me a tshirt. again. This time written on it: "I dont make mistakes. I CREATE CATASTROPHES"... should that get me thinking?
04:17 PM Deejay: gn8
04:29 PM * gloops_ looks up from sketching bizarre looking machines
04:40 PM * JT-Shop notices it is past 5 oclock at my sisters house
05:29 PM HighInBC: Loetmichel: sounds like you should attach something deadly to a robot
05:31 PM Loetmichel: HighInBC: are you sure you didnt forgot a "NOT" there?
05:31 PM HighInBC: lasers, drills, mills, all deadly
05:31 PM HighInBC: you must embrace your robot overlords
05:32 PM HighInBC: how else can you CREATE CATASTROPHES
05:32 PM Loetmichel: i dont need robots for that
05:32 PM Loetmichel: just my natural clumsyness ;)
05:58 PM Tom_L: JT-Shop did you get lost wanderin home?
05:59 PM JT-Shop: got wet lol
05:59 PM Tom_L: sprinkled here a bit
06:03 PM JT-Shop: rain stopped about when we got to the Mississippi
06:50 PM lunadabay: hi
06:51 PM lunadabay: thinking about throwing an offer in on this lathe. anyone have any experience with one? http://www.ebay.com/itm/Hardinge-CHNC-II-/321910246362?&autorefresh=true
06:52 PM lunadabay: might do a retrofit so i don't have to retrain a guy on the control
06:53 PM JT-Shop: I have a CHNC I that I changed to LinuxCNC... but that depends on the drives lol
06:55 PM lunadabay: cool, does it have a servo spindle?
06:56 PM lunadabay: i know some fanuc stuff is a little interesting to retrofit...
06:56 PM lunadabay: hmm
07:01 PM JT-Shop: yea the spindle is a servo drive
07:04 PM lunadabay: what control did yours have originally?
07:06 PM lunadabay: i think i found your build
07:06 PM JT-Shop: I don't recall what's important is the what drives you have
07:07 PM JT-Shop: damn reconcile is off
07:10 PM lunadabay: what am i looking for (or looking to avoid) for the drives?
07:13 PM JT-Shop: sorry out of time for the day
08:29 PM SpeedEvil: https://youtu.be/KQZS6bmTJ7Y?t=404 - How to convert a woodcutting bandsaw to metal
08:32 PM Tom_L: wonder where he found drill bits that cut that fast
08:32 PM Tom_L: :)
08:40 PM R2E4: evening, morning,afternoon.....
08:41 PM Tom_L: night
08:41 PM hazzy: evening :)
08:41 PM R2E4: if I installed from live cd to get to uspace Lcnc, do I need to get rid of linuxcnc from the live cd?
08:41 PM hazzy: SpeedEvil: I like the part were he destroys his vice, this is a pretty clean fracture
08:42 PM SpeedEvil: :)
08:42 PM R2E4: hi ya Tom
08:46 PM Tom_L: hi
08:49 PM R2E4: removing linuxcnc getting ready for uspace....
08:56 PM R2E4: wel.... that didnt hurt at all....
08:56 PM R2E4: ready for the 7i76E
08:57 PM Tom_L: running preempt?
08:57 PM Tom_L: instead of rtai
09:01 PM R2E4: yeah
09:01 PM R2E4: preempt
09:02 PM Tom_L: better do a latency test
09:02 PM R2E4: no, it will fail I'm sure....lol
09:02 PM Tom_L: seems you need faster hardware with preempt
09:03 PM R2E4: I dont get the latency messages.... for now its ok, im waiting on another computer, but I need to get the retrofit going.... Bridgeport
09:04 PM Tom_L: i heard