Modifying a stepper motor by drilling a hole down its shaft probably qualifies for the satisfying mod of the year award. That’s what [Russ] did to make needed improvements to his CNC flat-coil ...

CNC Foam Cutters are capable of cutting ... The control portion of the machine is a HobbyCC FoamPro kit that came with the 4 axis stepper motor control board and 4 NEMA 23 stepper motors.

grbl is stepper motor controller firmware for three-axis cnc machines, intended to run on Arduinos with ... This official board seems to be available in kit form today, while many others have fallen ...