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MiniMill Z Axis Upgrade with Offset Motor

Discussion in 'CNC Mills/Routers' started by Peter Van Der Walt, Jun 21, 2017.

  1. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Peter Van Der Walt published a new build:

    Read more about this build...
     
  2. GrayUK

    GrayUK Openbuilds Team Elder
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    Excellent video. Makes things so much clearer.
    Many Thanks :thumbsup:
    Gray
     
  3. stephen cia

    stephen cia Well-Known
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    Is there a plan for nema 17 similar plate?
     
  4. Julius

    Julius Well-Known
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    mill your own with the mini mill ;)
     
    RSW and Peter Van Der Walt like this.
  5. Dam

    Dam New
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    Hi. Pls ask why its better instead original mounting without belts
    Thanks
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Dam, read the Build Description on the first tab. It is detailed there
     
  7. Gary Weliver

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    So by being able to change the ratio for more torque which may help with a heavier router then does the software adjust the difference or do you have to have all your steppers at the same ratios?
     
  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Set your firmware steps per mm accordingly. The listed BOM is 1:1 ratio though so no change needed, only if you change ratio
     
  9. wiremonkey

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    Hey folks, does anyone have the measurement for this size belt center to center for these size pullies?
     
  10. Valter Benvegnu

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    Hi, will this solution works on a LEAD machine ? I do not have enough clearance to mount the stepper motor on the top of the Z axis.
    I was wondering if this plate allows the upside/down stepper motor to slide behind the back of the Z plate.
    Valter
     
  11. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    It looks like it should work! Give it a try and confirm back if you got it working, or shout if you have any issues.
     
  12. Valter Benvegnu

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    Thanks will do.
    Do you know the dimension between the motor and lead screw axis of this plate ? I can make some measurements just to know if in principle it works or a longer plate is needed.
    Cheers
    Valter
     
  13. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  14. Valter Benvegnu

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    OK, I took some measurement and the mini mill plate won't work. To offset install the Z motor on a LEAD (or workbee) a much longer plate is needed with longer belt and a different mount solution for X drag chain.
    Ideally a replacement custom end plate is needed instead of an additional plate on top of the cbeam end plate.
     

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