Manual Watch Cleaning Machine, updated 04.01.2026
Workshop > Projects
A project to build a 3D-printed hand crank with 1:3 planetary gear for a hand-operated watch-parts washing machine. Below some Gemini converted images of old original machines.
Constructed in Fusion 360 and printed on a Prusa MK3+ using a 0.4 mm nozzle and 0.2 mm layer height. The drive uses a planetary gear with a 1:3 ratio. The glass and parts basket are taken from my original Elma Standard. The next step is to source a low-budget glass and design a custom parts basket. The goal is a low-cost, hand-operated watch parts cleaning machine for hobbyists who only occasionally need to clean watch components.
A short video here: 3D printed hand driven watch part washing machine.