A professional who cleans and rough finishes surfaces of casting, using powered grinding wheel mounted on counterbalanced frame. Responsibilities include:

• Positions casting under grinding wheel manually or using crane or hoist.
• Grabs grinder handles and pulls wheel down against casting to remove projections, such as gates, fins, and parting lines, from surface.
• Repositions casting to grind other areas.
• May change position of belts on motor and pulleys to increase revolutions per minute when grinding wheel wears down.
• May remove cracks in surfaces of ingots, billets, and forgings, using grinder.
• May grind castings, using stationary grinder and be designated stand grinder.