This is a BYEBYE board (Peter Stoneham's version of the BYEBYE board) mount that mounts to the frame of a Rigidbot printer. I printed in ABS, 100% infill and it fit perfectly. The 4 holes are for M3 size screws and they fit perfectly as well.
BYE-BYE_Board_Clamp_-_PS_Version.STL | 136.0KB |