Bigger Knockouts with Hole Saws

Jun 15, 2000

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When you have a 1/2-inch knockout and you need a 3/4-inch one, put a 1/2-inch hole saw on the arbor, then slide a 3/4-inch hole saw over the 1/2 -inch one. The 1/2-inch hole saw acts as a pilot to the 3/4-inch hole saw.

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