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SESK: Stuff Everyone Should Know · sesk.info/weld-grinder-work-rest-gap

On a bench grinder, the work rest may be how far from the wheel at most?

1/8 inch maximum opening.

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  1. One-half inch
  2. One-eighth inch ✔
  3. One-fourth inch

Why: A small gap keeps your workpiece from wedging between the wheel and the rest. The tongue guard is the one with the 1/4 inch limit.

Huh, didn't know that: Work rests must be clamped after each adjustment, and never adjusted while the wheel is moving.

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What's a steering wheel's favorite game? Going round and round.
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References

Answer: One-eighth inch. A small gap keeps your workpiece from wedging between the wheel and the rest. The tongue guard is the one with the 1/4 inch limit.

  1. OSHA 29 CFR 1910.215 Abrasive wheel machinery www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.215
    Work rests shall be kept adjusted closely to the wheel with a maximum opening of one-eighth inch.
    Checked 2026-10-10.

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