My favorite piece to date. It's a sleeve that press fits on one end to the microscope lens, then has a disc of sapphire which press fits into it. My 10:1 drawing is in the picture. The piece is made out of delrin and has 3 critical dimensions. The 2 press fits and the length which needs to match the focal length. It is .282 inches long. The brass plate is a tool I made to pull it off the lens, and the black delrin round will pop the sapphire out from the back. This piece was a blast to make, 2 tools of carbide to get the finish and precision as well as the square shoulder for the lens whose seating depth is only .020 deep.Here is a closeup.
