Lowest Complexity Laser Cutter

As usual (for me), most of the design process will actually take place in Blender instead of diving right into CAD. 

The main goal of this project being pure mechanical simplicity, it's a mild success so far. 

I am very excited to do some reverse-engineering on 3D printer designs I've found online, now that I know what it's like to design belt-driven components running on aluminum extrusions!