A professional who operates polishing lathe to reduce circumference of printing rollers to specifications and remove defects, such as turning and polishing lines, high spots, and scratches. Respnsibilities include:

• Mounts roller on mandrel of lathe, using hoist.
• Measures circumference of roller at several points to locate irregular spots, using girth tape.
• Examines surface of roller for defects.
• Depresses pedal to raise water vat and starts lathe to rotate roller in vat.
• Polishes roller by either of following methods:
• (1) Moves polishing stone back and forth across length of roller, changing from coarse to finer grades of stone to impart acceptably smooth finish.
• (2) Mounts flat stone on spindle of polishing head, starts oscillation of stone, and lowers stone onto surface of rotating roller.

• Moves lever to engage gear that moves machine head back and forth over surface of roller.
• Changes stones on machine head to impart final polish.
• Examines polished rollers for rough spots, pinholes, and scratches.
• Rubs scratches and rough spots with burnishing tool to finish roller.
• Verifies circumference of polished roller, using girth tape.
• Cleans roller before and after polishing, using cloth, water, and detergents or cleaning solution.