My own 40W laser cutter.
Converted from the original MoshiBoard controller (that has driven many people insane) to a modified version of GRBL and is now fully capable of proper Gcode control.
It uses an arduino Uno, a grbl board by
Protoneer and an in house developed Gcode Generator plugin for Rhinoceros3d using python and rhinoscript
With only a 300x200mm cutting bed, the next step is likely to build a larger machine with the same electronics.