Blocker, Hand Job

Information about the jobs, its descriptions, work loads, duties and responsibilities.

Blocker, Hand Job

BLOCKER, HAND JOB will do the fallowing jobs / work – 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.


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