Operate lathes to turn edges of partially processed jewel bearings.
What does a Jewel Bearing Turner do?
Operates lathe to turn edges of partially processed jewel bearings: Chips edges of ground sapphires to approach disk shape, using chisel and hammer. Mounts bearing in chuck of lathe. Starts lathe and presses diamond cutter against circumference of bearing. Examines shaped bearing, using magnifying glass and dial micrometers, to ensure conformance with specifications.