A professional who tends single-spindle drilling machine that drills holes in glass products, such as panes, mirrors, picture glass, furniture tops, and ornamental glass. Responsibilities include:

• Positions pattern on glass and marks glass for drilling, or measures and marks glass, using ruler and crayon.
• Positions glass on felt-covered table beneath drill, starts drill, and pulls lever to lower drill against glass.
• Squirts coolant from can onto drill during boring.
• Raises drill, removes glass, and wipes glass clean with cloth.
• May sharpen bits, using diamond grinding wheel.
• May nail or clamp stops to table to hold glass in position.