A professional who tends gas or electric kiln to affix paint on glass. Respnsibilities include:

• Ignites and regulates gas burners to heat kiln to prescribed temperature, or regulates thermostat to control temperature of electric kiln.
• Spreads plaster of paris on metal trays with trowel, roller, or palette knife to form smooth, level bed for glass.
• Sets sections of glass on trays and positions trays in kilns, using tongs.
• Observes glass through peepholes in kilns to detect signs of warping, bubbling, cracking, or blistering.
• Removes trays after specified period of time, and stacks trays for gradual cooling and annealing in lehr.