A professional who tends equipment that filters glaze mixtures and conveys glaze to spraying units. Respnsibilities include:

• Filters aqueous glaze through electromagnetic filters and screens to remove metal particles or other foreign substances, and stores filtered glaze in stone jars.
• Tests specific gravity of solutions with hydrometer and adds water to obtain solutions of designated specific gravity.
• Turns valves to transfer glaze to spraying units or to pressure tanks.