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Repair mold defects, such as cracks or broken edges, using patterns, mold boxes, or hand tools.
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Clean, finish, and lubricate molds and mold parts.
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Measure ingredients and mix molding, casting material, or sealing compounds to prescribed consistencies, according to formulas.
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Brush or spray mold surfaces with parting agents or insert paper into molds to ensure smoothness and prevent sticking or seepage.
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Assemble, insert, and adjust wires, tubes, cores, fittings, rods, or patterns into molds, using hand tools and depth gauges.
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Bore holes or cut grates, risers, or pouring spouts in molds, using power tools.
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Pour, pack, spread, or press plaster, concrete, or other materials into or around models or molds.
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Set the proper operating temperature for each casting.
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Remove excess materials and level and smooth wet mold mixtures.
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Construct or form molds for use in casting clay or plaster objects, using plaster, fiberglass, rubber, casting machines, patterns, or flasks.
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Tap or tilt molds to ensure uniform distribution of materials.
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Measure and cut products to specified dimensions, using measuring and cutting instruments.
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Operate and adjust controls of heating equipment to melt material or to cure, dry, or bake filled molds.
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Read work orders or examine parts to determine parts or sections of products to be produced.
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Load or stack filled molds in ovens, dryers, or curing boxes, or on storage racks or carts.
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Smooth surfaces of molds, using scraping tools or sandpaper.
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Select sizes and types of molds according to instructions.
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Engrave or stamp identifying symbols, letters, or numbers on products.
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Verify dimensions of products, using measuring instruments, such as calipers, vernier gauges, or protractors.
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Patch broken edges or fractures, using clay or plaster.
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Withdraw cores or other loose mold members after castings solidify.
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Trim or remove excess material, using scrapers, knives, or band saws.
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Align and assemble parts to produce completed products, using gauges and hand tools.
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Separate models or patterns from molds and examine products for accuracy.