Fills spinnerette $T3packs$T1 (metal cups) with measured amount of treated sand to filter impurities from molten nylon before extrusion into filaments: Examines holes in bottom of pack, using microscope, to detect damaged or clogged openings.
Weighs out prescribed amounts and grades of treated sand and pours sand into pack, leveling sand with crescent-shaped tool. Repeats filling and leveling process until specified number of layers have been built up, according to type of nylon to be spun. Disassembles used packs, pours out sand, and washes pack in soapy water to remove burned sand adhering to cup after extrusion of molten nylon.
