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A soft touch prevents scarring

When drilling holes, the bit suddenly breaking through the workpiece can cause the chuck jaws to bump into the workpiece, which leaves an ugly round scar in the surface. I found a preventive measure amid my rotary-tool accessories: a felt polishing wheel. Slip the wheel over the drill bit and you’ll put a stop to errant chuck marks.
—Douglas Tapling, Reed City, Mich. 


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