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Topics - wijnendael

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General Mach Discussion / Setup help needed
« on: June 30, 2012, 09:03:02 AM »
Hi all, I am in the process of building my own little cnc machine and have just got to fitting the motors to X & Y but have become a litlle confused with the motor setup.
I am using Nema23 motors that have a 1.8 degrees per step and the screws fitted to the X & Y are 14mm 3D (3mm per turn). The stepper driver board has five microstep settings which are 1, 1/2, 1/4, 1/8, 1/16 and is currently set at 1/8. I have tried to get the setting for the mach3 motor settings from the calculations but when i try to engrave some letters they are not the correct size where am i going wrong. I have used 1/3= .3333r and steps per rev = 200 x 8 = 1600 then 1600 x .3333 = 533.28 this is the number i have entered into the steps per rev is it correct ?

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