A professional who makes sand cores used in molds to form holes or hollows in metal castings. Respnsibilities include:

• Cleans core box with blast of compressed air.
• Dusts parting sand over inside of core box to facilitate removal of finished core.
• Partially fills core box with sand by pulling cord that releases sand from overhead chute or by using hands or shovel.
• Compacts sand in core box, using hands, hand rammer, and air rammer.
• Bends reinforcing wires by hand, and inserts them in sand.
• Fills core box and rams sand in tightly.
• Inverts core box onto metal plate, and lifts box from sand core.
• Patches cracked or chipped places on core and smooths core surfaces, using spoon and trowel.
• May bake cores to harden them.
• May assemble cores.
• May work at bench making small cores and be designated Coremaker, Bench; or make large cores on floor of foundry and be designated Coremaker, Floor.