Job Description:

• 1) Tends truing machine that mills and recuts surfaces of metal lap used in grinding and polishing eyeglass lenses to specified curvature: Holds lap against rotating brush to remove marks indicating number of times lap was used.

• 2) Set scale indicators of truing machine, according to dioptric power indicated by numbers on lap, and clamps lap in chuck of machine.

• 3) Starts machine and positions cutting blade against surface of lap, or engages automatic feed mechanism which reciprocates lap against cutting blade to shave and true surface of lap.

• 4) Removes lap from machine chuck, and measures it for conformance to specifications, using template.

• 5) Grooves surface of lap to retain abrasive on surface edges of lap, by hand or machine, to remove roughness caused by cutting, truing I, and grooving operations.

• 6) Occasionally sharpens cutting blade, using grinder.