About this 3D model
This is a remix of a Precision Focuser for RedCat 51 from Wal20The holes for the nuts and the screws are designed for M4.The holes for adjusting screws (x2) have been threaded with a tool (M4). The bigger diameter for the adjusting ring must be put face to the camera. If not, the focuser will be thighten and won't be able to turn.