Hi guys, I am currently converting an M200 to Reprap electronics. Good news is I am documenting the build on YouTube. Board is RUMBA, steppers are 0.9 NEMA17. Build platform will have additional magnets added to hold a Prusa MK3 flex plate. There are two threaded holes at the back of the build platform (perforated plate removed) that line up exactly with the MK3 plate notches. It's uncanny. Cby TeachingTech - General