Proxxon MF 70 CnC NEMA23 motor mounts
thingiverse
To create a CNC machine, I selected the Proxxon MF 70 as my base and purchased it separately, adding my own NEMA23 steppers from my collection. The machine's image can be viewed here: http://www.proxxon.com/eng/html/27110.php. Equipped with end-stops on all axes, the controller used is a 3 axis TB6560 with a 300-watt power supply. The interface chosen was an Arduino Uno with GRBL software. For generating g-code, Universal G-Code Sender was utilized. HeeksCnC served as the cam software. However, the machine experienced significant backlash on both the x and y axes, which can be mitigated by installing self-lock nuts in reverse (normal M5 for y-axis and left-turning M5 for x-axis) at the opposite end of the motor inside the end plate.
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