Tend tumbling machines that deburr, smooth, and burnish watch parts.

What does a Tumbler do?

Tends tumbling machine that deburrs, smooths, and burnishes watch parts: Dumps specified abrasive powder, stones, or metal balls, in machine. Starts machine that cleans and burnishes parts. Rinses tumbled parts and dips them into oil to prevent rusting. Places parts in heated centrifuge to dry.