Cube 3 cartridge filament drive plate (top)

This is a part I am currently working on to make my cube3 printers independent of 3D Systems cartridges to be used in conjunction with the firmware mod posted below. Im planning on making the final version of this part on a CNC out of aluminum, but if youre looking for a printed mod check this one out. http://www.thingiverse.com/thing:2060242

http://www.openbuilds.com/threads/cube-3-pro-hacks.8420/

This part was designed to use an M5, 3mm or 1/8" pneumatic connection to link the filament d