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Following this rule will reduce the risk of serious personal injury. The key to efficient operation begins by controlling the pressure and surface contact between the grinding wheel and workpiece. Flat surfaces are ground at an acute angle, normally between 5 to 15 degrees. For maximum control, hold the grinder in front and away from you with both hands, keeping the grinding wheel clear of the Fig. 8 TRIGGER SWITCH LOCK-ON BUTTON 5° TO 15° Fig. 7 workpiece. Start your grinder and let the motor a