Nema stepper motors have m3 holes at a distance of 31 mm. A default LEGO brick of 4 by 2 studs is 32 x 16 x 9.6 mm. LEGO and Nema 17 stepper motors are a perfect match. After upgrading the stepper motors to Nema 17 motors I decided to build a X, Y and Z axis machine.
The printer started as a A4-plotter with stepper motors from an old HP printer. This LEGO printer is based on the Prusa I3 rework printer.
