Ramps 1.4 + Mosfet Case

This is a case for arduino mega + ramps 1.4 and a mosfet (for the heated bed). Holes at the top are for a 80mm cooling fan. To fix the mosfet and the arduino to the bottom part I used 4 3x10 screws (with some washers), while the top and bottom part are held together by 6 3x20 screws. Holes for m3 nuts are too small on purpose: I heated the nuts and then I inserted them into the slots, letting them melt the plastic and fit.