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Very impressed with ox project!

Discussion in 'CNC Mills/Routers' started by SJD, Sep 4, 2014.

  1. SJD

    SJD Well-Known
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    Hello all
    New to openbuilds forum
    I have been looking around for a router plan and am very impressed with the ox.
    Hats off to the openbuilds team! This is a very clean design and think its what im going to go with.
    One of my ? 's are does anyone use a nema23 on z axis for greater speed instead of nema17?
    I plan on using Hobbycnc control board since I have had good luck with it on my bench top milling machine.
    Thanks for any advise or do's and donts!
     
  2. Franco Ponticelli

    Franco Ponticelli Journeyman
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    I use a nema17 for a quite heavy Bosch 1617. The motor doesn't seem to have any issue with that, the only problem is that if I kill the motors the vibrations of the router are enough to make the Z axis "fall" into the table. It is a potential issue and I have not a good solution for it.
     
  3. GrayUK

    GrayUK Master
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    I think most people are now changing over to Nema 23's all round. Robert Hummel, who makes aluminium plates for the Ox, now produces parts to allow 23's to be fitted.
    Let's face it, the only differences are positive ones, other than an increase in price, which for one extra is minimal.
    You will be gaining that extra torque, maybe speed, and there is that problem of Z Axis drop.
    Go for a 23, it's got to be worth it.

    Cheers
    Gray
     
  4. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    This can be solved with a less aggressive thread pitch on the screw.
     
  5. dddman

    dddman Master
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    I assume that you can manage that by adding an extension spring to balance the weigth of the router/z axis, but yes, the Nema 23 is much simpler
     
  6. Franco Ponticelli

    Franco Ponticelli Journeyman
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    Where are the designs for those plates? Now that I have an Ox I should try to mill them myself ;)
     
  7. GrayUK

    GrayUK Master
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    Just chase up Roberts notable members list, and then his builds. They should be in there.
    Gray
     
  8. Robert Hummel

    Robert Hummel Custom Builder
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    Files are in a complete zip
    I have to add the Z plates still but the main parts are there :)
    Open in sketchup and generate the code
     
  9. Jonny Norris

    Jonny Norris Veteran
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    Really not had this issue. Is your lead screw nut anti backlash?
     
  10. Franco Ponticelli

    Franco Ponticelli Journeyman
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    It is.
     

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