Glass makers, cutters, grinders and finishers
South Africa Glass makers, cutters, grinders and finishers blow, mould, press, cut, trim, grind and polish glass, shape molten glass according to patterns.
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Tasks
- (a) heating glass to pliable stage, using gas flames or ovens, and rotating glass to heat it uniformly
- (b) blowing and bending glass tubing into specified shapes to form scientific apparatus like flasks, retorts, pipettes
- (c) grinding and polishing glass objects or parts to correct defects or to prepare surfaces for further finishing and smoothening and polishing rough edges, using belt sander or polishing wheels
- (d) examining glass stock and finished products and marking or discarding items with defects such as spots, stains, scars, snags, chips, scratches, or unacceptable shapes or finishes
- (e) reading work orders to determine dimensions, cutting locations, and quantities to cut
- (f) observing gauges, computer printouts and video monitors to verify specified processing conditions and make adjustments as necessary
- (g) positioning pattern or drawing on glass, measuring dimensions, and marking cutting lines, using glass cutting tools and cutting glass along marked outlines or around pattern
- (h) setting up, operating and adjusting computerized or robotic glass cutting equipment
- (i) inspecting, weighing, and measuring products to verify conformance to specifications, using instruments such as micrometers, callipers, magnifiers, and rulers
- (j) regulating oven temperatures according to glass types to be processed
- (k) transferring pattern for individual stained glass parts from full size drawing to pattern paper, using stylus to trace drawings
- (l) spraying silver solution on glass to provide mirrored surface, using spray gun
- (m) laying out, cutting and grinding optical and other glass to specified dimensions, weight for moulding into lens blanks and for use as watch crystals
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