A professional who tends machine that conveys rectangular glass over grinding and polishing wheels to obtain pencil edge and to polish edges. Responsibilities include:

• Places glass on grooved conveyor with top edge of glass against guide.
• Attaches weights to top of glass or pulls lever to lower pressure roller that forces glass against grinding and polishing wheels.
• Turns handwheel to regulate speed of conveyor according to type of glass.
• Starts flow of coolant and polishing compound to grinding and polishing wheels.
• Turns glass to finish other edges and removes glass from machine.
• Places glass on skid.
• Observes quality of glass edge to determine need for wheel dressing or adjustment, and lowers or raises wheel by turning nut with wrench; or reads ammeter to determine grinding load and notifies maintenance department to adjust wheels.
• May wipe polishing compound from edges with cloth.
• May maintain record of number of pieces edged.