Make sure automated machinery is programmed and running properly.
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. Set scale indicators of truing machine, according to dioptric power indicated by numbers on lap, and clamps lap in chuck of machine. 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. Removes lap from machine chuck, and measures it for conformance to specifications, using template. 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. Occasionally sharpens cutting blade, using grinder.