He came up with the MTM Snap, a snap-together pcb mill as part of the Machines That Make group at MIT.
We covered [Jonathan]‘s previous work made out of half-inch plywood, but the new iteration of his PCB includes a clever snap-together mechanism instead of screws and bolts. Although the MTM Snap looks a lot like3d printers such as a reprap, the similarities end with the off-the-shelf stepper motors. Instead of using motor drivers and control electronics from a reprap, the project uses custom stepper drivers, controlled by a bare Arduino.
We’re really impressed with the results of the MTM Snap compared with what is possible on a reprap-derived milling machine like a makerbot or wolfstrap. We’re thinking that’s due to the mass of this project compared to the printed ABS parts of the ‘common’ 3d printers, but any MEs are more than happy to correct that notion.