I designed this intending for 0.5mm line width. So a 0.4mm or smaller nozzle is recommended. You will need to tap the MM2 carriage, I used M4, M5 and M6 taps for the various holes. You will also need some miscellaneous M3, M4, M5, and M6 hardware. I apologize for the eclectic mix of hardware needed, but that's what ended up working given the mount plate in question All screws I chose are pan head screws, Phillips drive. Others will work. - 2x M6 x 8mm (or 10mm, 12mm with flat washer) for the rear side mounts - 1x M5 x 8 for the rear center mount - 4x M4 x 8mm, 10mm or 12mm long pan head screws for the front side mounts plus to screw the front and rear sections together -2x M3 x 6mm (or longer, 8 and 10mm will secure the top fan shroud) -4x M3 x 18mm screws to mount the fan & intake to the rest of the ducts.