A professional who heat treats jewelry fittings to soften fittings for further processing, using electric or gas furnace. Respnsibilities include:

• Sets automatic controls to specified temperature.
• Fills steel tray with fittings and places fittings in oven, using tongs.
• Removes tray after specified time and immerses fittings in water.
• May clean oxide and scale from fittings by immersing fittings in chemical and water baths.
• May heat treat ingots, using Bunsen burner or torch, and immerse ingots in alcohol to restore ingot malleability.
• May open and close gas valves, ignite and extinguish gas flames, and set time clock alarm for heating and cooling periods.