Parametric reprap gen7 motherboard mount clamp (Q47979)

My previous motherboard “holder†was just a big piece of plexiglass, held in place by zip ties, nice, but not “minimal†, nor quick, nor easy to make in series, and mostly, not reprapable :) So i came up with these clamps, to be fited on the reprap's structure’s threaded rods: they already hold well by simple tension, but are even more stable thanks to the inwards pressure once you screw the motherboard onto them.