The Planted Tank Forum - View Single Post - How to drill steel plate, need suggestions
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post #11 of (permalink) Old 06-27-2013, 04:59 AM
Black Hills Tj
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Join Date: Jul 2008
Location: Rapid City, South Dakota
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Originally Posted by Rodneywt1180b View Post
Mark your location with a center punch first. Drill a pilot hole with a sharp smaller bit. Drill again with a size about 1/2 way between your first bit and your final size. Finally drill with the size you want. Any regular old oil will work. I've even used cooking oil to drill steel before.
This. Slowly work your way up to your desired hole size. If I'm going to a half inch hole, I'll often go 1/8, 1/4, 1/2
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