W A R N I N G - If a grinding wheel is permitted to exceed the maximum safe speed, it may disintegrate and cause injury to the operator and damage to the grinding machine!
* Wear goggles for all grinding machine operations.
* Check grinding wheels for cracks (Ring Test Figure 5-11) before mounting.
* Never operate grinding wheels at speeds in excess of the recommended speed.
* Never adjust the workpiece or work mounting devices when the machine is operating.
* Do not exceed recommended depth of cut for the grinding wheel or machine.
* Remove workpiece from grinding wheel before turning machine off.
* Use proper wheel guards on all grinding machines.
* On bench grinders, adjust tool rest 1/16 to 1/8 inch from the wheel. See figure 5-1.