I had a lot of parts lying around so I built this unit to use some of them. Most of it is 6mm acrylic, but it has some metal and some plastic parts. When I ran out of a specific part, I fired up TinkerCAD and designed and then 3D Printed a replacement. This now uses Mach 3. I am considering turning this into a kit as most of the parts are off the shelf.
As much as I like using Mach 3, I am going to replace the electronics with a RUMBA or ordinary RAMPS. I lile the idea of a single carriage with multiple, vs interchangeable heads and the RUMBA lets me do this. I will do the same for the 3-in-1