How far from the surface of the grinding wheel should tool or work rests be mounted?

Tool or work rests should be mounted at a distance of 1/8" from the surface of the grinding wheel. This specific distance is crucial for ensuring both safety and efficiency during grinding operations.

If the work rest is positioned too far from the wheel, it can create a gap that may cause the workpiece to slip or become unsteady, increasing the risk of accidents. Conversely, if the work rest is too close, it can cause the wheel to bind, leading to potential damage to both the wheel and the workpiece, and even posing a safety hazard to the operator.

The 1/8" distance strikes a balance, allowing for effective support of the workpiece while minimizing the chances of slippage or binding. It is a widely accepted standard in machining practices, providing optimal conditions for precision grinding.