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I need a little advice.

Discussion in 'CNC Mills/Routers' started by BismarckDon, Sep 15, 2014.

  1. BismarckDon

    BismarckDon Well-Known
    Builder

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    I've been studying the information and videos on the OX CNC build. I am very interested in building one with approximate footprint of 750 mm x 750 mm and using a Dewalt DWP 611 Compact Router. Has anyone else tried this? Will a machine scaled to that size be rigid enough to be accurate? I was wondering if there was a calculation to determine the X-gantry V slot rail length if the X main frame rail was 745 mm long. (I am assuming that I will lose a little length when cutting the rails.) Another question: Can the V slot rails be cut on a table saw with a carbide tip blade? I have a very accurate table saw and I can control the angle of the cut. Another question: what is the diameter of the Nema 23 stepper motor shaft? I was wondering which flexible coupler to order. Also, would it be advisable to get an electronics package with 4 stepper drivers and run two for the Z axis? Thanks for any help you can offer!
     
  2. Tweakie

    Tweakie OpenBuilds Team
    Staff Member Moderator Builder

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    Perhaps best to obtain your stepper motors and measure the shaft diameter before ordering the flexible couplings.
    They should have a shaft diameter of 1/4" but I have some steppers (sold as NEMA 23's) with 6mm diameter shafts.

    Tweakie.
     
  3. BismarckDon

    BismarckDon Well-Known
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    Good advice. Thanks!
     
  4. dddman

    dddman Master
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    Most of the time I order 5mm shaft couplers and make the holes myself on the press drill.
     

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