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Author Topic: How do I set motor gearing?  (Read 2018 times)

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How do I set motor gearing?
« on: September 18, 2009, 10:32:07 PM »
First post  :D


I finally got my CNC ready for use! The only thing holding me back is getting the gearing fro the stepper motor to the mach3 correct. When I run the roadrunner program the program is aobut as big as my whole table when cutting! 3ftx3ft

can anyone inform me or point me to a link I'm not seeing? I watched the tutorial videos, and I hope I didnt look over this step  :-\
Re: How do I set motor gearing?
« Reply #1 on: September 19, 2009, 02:10:46 AM »
you need to tune the number of steps per unit on the motor tunning window.
This number of steps per unit depends on the gearing of the motor, how transmition is done for movement, the encoder resolution (in case of servo) ...

If you are getting a bigger image as you would expecting to have, then put more steps per unit that you have right now.
In fact if you are getting, lets say 100% more big than expected (the double), then multiply the current steps per unit by 2.

Hope that helps
Re: How do I set motor gearing?
« Reply #2 on: September 19, 2009, 12:08:17 PM »
Cool! Thanks buddy, I will mess with it now  :D