Answer :
Final answer:
The tool rest on a grinder should be adjusted so it is not more than 1/8" away from the grinding wheel. A greater gap increases the risk of the tool or workpiece being caught, and removing the tool rest altogether is incorrect.
Explanation:
In the safe operation of a grinder, correct adjustment of the tool rest is essential. The tool rest should be adjusted so that it is not more than 1/8" away from the grinding wheel. This proximity reduces the risk of the tool or workpiece being caught in the gap causing damage or injury. In practice, maintain an approximate distance of 2 to 3mm between the tool rest and the grinding wheel.
An adjustment greater than 1/8", such as 2" to 3", is too far and increases the risk of entrapment. Completely removing the tool rest from the grinder is also incorrect as it provides a necessary support for the tool or workpiece during grinding operations.
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