I have been working on this project for something like 3 years on and off, sometimes leaving it for a few months. Now I really want to finish it. For me, the mechanical part was the easy (though long) part because I get to use about 17 CNC machines and MasterCAM and I am a machinist. The hard part is the electronics part. Had a few problems getting Windows to communicate to the X5 Mini via the USB cable but found something on the Smoothie forum and got the machine moving.