Build from Paris

This topic contains 16 replies, has 6 voices, and was last updated by  ALB Workshop 20 hours, 43 minutes ago.

Viewing 17 posts - 1 through 17 (of 17 total)
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  • #93896

    ALB Workshop
    Participant

    Hello

    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 pictures

    #93908

    MegaDad3D
    Participant

    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.

    1 user thanked author for this post.
    #93977

    Ryan
    Keymaster

    Those are really nice pictures, I need to find a way to get to Paris for some professional product shots from you!

    1 user thanked author for this post.
    #94010

    ALB Workshop
    Participant

    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.

     

     

    #94039

    Ryan
    Keymaster

    You are welcome…and that would be awesome!

    1 user thanked author for this post.
    #94163

    ALB Workshop
    Participant

    before the cable management with cable chains

     

    1 user thanked author for this post.
    #94604

    Mark
    Participant

    What kind of tubing did you go with?

    #94608

    ALB Workshop
    Participant

    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 picture

    #94863

    ALB Workshop
    Participant

    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 = 81.000

    #94869

    Jamie
    Participant

    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?

    1 user thanked author for this post.
    #94870

    ALB Workshop
    Participant

    Thanks,

    yes, I’m with 20T pulley and my  drivers are the A4988 with 1/16e microstepping config

    #95423

    ALB Workshop
    Participant

    This is how I mounted the end stops
    May be I have to find better mount to avoid using zip tie

     

    #97022

    ALB Workshop
    Participant

    first real project with the MPCNC

    2 users thanked author for this post.
    #97241

    Sambuka
    Participant

    Hi,

    which spindle is this ?

    Greets from Germany 🙂

    #97325

    ALB Workshop
    Participant
    #97376

    Sambuka
    Participant

    That’s great, it’s the same I have ordered a couple of days ago. I hope my package is coming soon…

    #103793

    ALB Workshop
    Participant

    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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