Job Description:

• 1) Affixes precision optical or ophthalmic lens blanks in metal blocks used to hold blanks during grinding and polishing operations: Selects blocks according to size of lens blank and heats blocks or lenses over gas burner to prepare for adherence of pitch or wax.

• 2) Pours molten pitch into block, using ladle, or melts wax over holding surface of block, using torch.

• 3) Presses and centers lens blank into wax or pitch.

• 4) Pushes lens to test for adherence to block and positions blocked lens under fan for cooling.

• 5) May smooth and remove sharp edges from lens, using grinding wheel.

• 6) May test centering of lens in block, using lapping machine.