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  1. #1

    Mach 3 scaling issue

    Hey all, I bought a cnc recently and "upgraded" it to Mach 3. It was used and iv rewired the entire thing added a Mach control board ect. I'm running Nema 23s on all axis, ball screw is 1 inch I Believe. Current tune for each motor is set to 600 steps, 239 velocity. This is just a randomized figured Iv put in to test the machine. Mach is set in inches, I have about 7inches of plunge on my z, however instead of reading - 7. 000 it reads like -189.00. Which is more closer to mm scale. How can I get this to accurately display an inch scale? Is this a motor tuning issue? Eg 600 steps is equivalent to 239mm? Would I just have to do the math conversion and set it accordingly? Or is there another set up page in Mach that I missed?

  2. #2
    Join Date
    Feb 2021
    Posts
    2

    Re: Mach 3 scaling issue

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  3. #3
    Join Date
    Mar 2022
    Posts
    1

    Re: Mach 3 scaling issue

    Quote Originally Posted by Ravikumar05169 View Post
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  4. #4
    Join Date
    Mar 2022
    Posts
    1

    Re: Mach 3 scaling issue

    Quote Originally Posted by HelenBr View Post
    This locksmith service was the worst I've ever had. The locksmith came with a 2 hours delay, the work was done really bad and I got a lot of scratches on my door and the lock. More than that, the door is now closing even worse as it was before. I was told to call key cutting wembley for a better locksmith experience and it was 100% the best option I could ever have. That locksmith service was the best I could ever have and gladly the work was done clean, and now the door is closing perfectly, the locksmith took a look at all the locks inside my house and he pointed me at those that might have an issue. This means a real professional
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  5. #5
    Join Date
    Mar 2003
    Posts
    35538

    Re: Mach 3 scaling issue

    First, go to Config > Native Units. Set to inches, and restart Mach3.
    Then set the steps/unit accordingly, entering the number of steps required for 1" of movement.

    Note that if you use G21 to switch to metric mode, the DRO's will display mm's instead of inches.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  6. #6

    Re: Mach 3 scaling issue

    Thank you will try this tn.

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