Watch dial holder for drill

This tool was drawn up to be able to gradually reduce the diameter of a watch dial, without any specialty tools beyond a drill. A small diameter (M2 or slightly smaller for NH35 dials) screw will be necessary to be able to fasten the two parts, clamping a dial in between, in order to be able to use a drill, and sand away until the desired diameter is met.

Ideally this would be done using a lathe, however not all of us may have the inclination to invest in one. Care needs to be made when mounting to make sure that the dial is turning concentrically as a result. I recommend applying some protective tape to protect the dial finish.

This part was designed for my use case, but the holder part may be too large for some dial designs. The washer was designed around NH35 dial feet, so it just fits in that application.

I printed this in PET-G, the screw threads are a bit weak so don't go too crazy. Also worth mentioning to not apply too much force when sanding. It took me a good 10 minutes of