March 20, 2019 at 8:31 am #93896
I’m from Paris (France)
I started my build in January and it’s almost fully done now.
I opted for GRBL instead of marlin because I’m used to it since I build a small laser engraver (from 3Dpburner’s project)
I use Universal Gcode Builder to drive the MPCNC
I had no major trouble for the build (just some prints fails :D) ) and configuration tweeks
The work capacity area is about 800x500mm
It’s pretty low Z travel because I don’t need too much height (for now).
It’s not that complicated to change later.
Here is few picturesMarch 20, 2019 at 9:38 am #93908
Looks good so far. The MPCNC offers a lot of flexibility, and it’s interesting to see how you’ve adapted it to your own exerience.March 20, 2019 at 5:04 pm #93977
Those are really nice pictures, I need to find a way to get to Paris for some professional product shots from you!March 21, 2019 at 2:29 am #94010
Those are really nice pictures, I need to find a way to get to Paris for some professional product shots from you!
Thanks Ryan, and thanks for you work, this project is awesome.
Don’t hesitate to contact me if you need or if you come to Paris.March 21, 2019 at 7:51 am #94039
You are welcome…and that would be awesome!March 22, 2019 at 2:42 pm #94163
before the cable management with cable chains
1 user thanked author for this post.March 26, 2019 at 4:54 am #94604
What kind of tubing did you go with?March 26, 2019 at 5:47 am #94608
What kind of tubing did you go with?
It’s steel tubing 25mm outside diam and 1.5mm thickness
It’s the only kink of tubing I was able to find, it’s not as smooth as a dressing hang bar (chromed ?) but it’s a lot more cheaper
here is a pictureMarch 28, 2019 at 2:11 pm #94863
I have a question
Is the belt tension related to the mm/step ?
because after having mesured the axis travel with comparator it seem that my configuration is not the same as the default
I configured GRLB as follow to obtain a the best precision as possible
$100 = 81.000 (X-axis travel resolution, step/mm)
$101 = 81.000 (Y-axis travel resolution, step/mm)
$102 = 404.000 (Z-axis travel resolution, step/mm)
$103 = 81.000
$104 = 81.000March 28, 2019 at 4:58 pm #94869
Belt tension could theoretically change the tooth pitch of the belt but I would expect it to be very small, maybe one percent at most.
If your steppers have 200 steps per revolution
and if your drivers are microstepping at 32x microsteps
and if your pulley has 16 teeth
and if you’re using GT2 belts with 2mm per tooth
then you should get:
32 microsteps / step * 200 steps / rev * 1 rev / 16 teeth * 1 tooth / 2mm which is 200 steps per mm, which is the default.
(In my case I’m using 16-step microstepping on an A4988 so I have 100 steps per mm)
If you had 1/16th microstepping and if your pulley had 20 teeth instead of 16, then you could expect 80 steps/mm.
What motor drivers and pulleys are you using?March 28, 2019 at 5:15 pm #94870
yes, I’m with 20T pulley and my drivers are the A4988 with 1/16e microstepping configApril 3, 2019 at 6:33 am #95423
This is how I mounted the end stops
May be I have to find better mount to avoid using zip tieApril 15, 2019 at 7:27 am #97022April 16, 2019 at 1:31 pm #97241
which spindle is this ?
Greets from Germany 🙂April 17, 2019 at 2:55 am #97325
which spindle is this ?
Greets from Germany 🙂
1 user thanked author for this post.April 17, 2019 at 10:23 am #97376
That’s great, it’s the same I have ordered a couple of days ago. I hope my package is coming soon…June 19, 2019 at 3:52 am #103793
Last upgrade on my build
I added quick release lever to hold the spindle
I also made a dust shoe that is attached to the frame and not not Z moving element.
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