A professional who sets up and operates machine to grind stone to smooth finish or polish stone to lustrous finish. Responsibilities include:

• Selects grinding or polishing wheels according to type of stone, finish specified, or step in finishing process.
• Moves arm of machine over wheel and attaches wheel to spindle with bolt or latch.
• Spreads abrasive or water on stone by hand, or turns valves to circulate abrasive or water on stone.
• Pushes levers to start machine and guides rotating wheel over surface of stone by hand, observing puddles of water on stone to detect uneven areas.
• Washes stone, using hose, and changes abrasive or wheel as grinding or polishing progresses to surface stone according to specifications.
• May grind and polish curved or irregular stone surfaces, using portable polisher.
• May fill cracks or imperfections in stone with wax that matches color of stone.
• May place, align, and level stone on machine bed.
• May be designated according to type of stone surfaced as machine granite polisher; machine marble polisher.