OHST Practice Exam

Question: 1 / 400

What is the standard distance maintained for a tool rest from a grinding wheel to ensure safety?

1/8 inch

1/4 inch

Maintaining a standard distance of 1/4 inch between the tool rest and the grinding wheel is critical for ensuring safety during grinding operations. This specific gap allows for proper clearance while minimizing the risk of the tool hitting the wheel. A distance that is too great may not provide proper support for the workpiece, resulting in stability issues and an increased risk of injury. Conversely, if the distance is set too close, there is a heightened risk of accidental contact, leading to potential tool damage, wheel breakage, or injury to the operator. The 1/4 inch standard strikes a balance, promoting both effective grinding and safety by preventing the workpiece from being drawn into the grinding wheel.

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1/2 inch

1 inch

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