Review

This is one of those “Why didn’t I think of it?” products.
Rockler’s Power Bore drill bits clear chips much faster than ordinary twist bits or brad-point bits, while still cutting crisp, precise holes. These bits remind me of those inside hollow mortising chisels. Each has a centerpoint for accurate placement, a single shear-spur to cut the hole, and steeply angled flutes that evacuate chips from inside a hole without plugging. I drilled multiple holes into 2"-thick red oak and hard maple with the Power Bore bits as well as standard twist bits and brad-point bits of the same diameter. The Power Bore bits never plugged, and I didn’t once have to back them out of the holes. By comparison, I could go only 1" deep with the brad-point bits and 3⁄4" deep with the twist bits before plugging the flutes. No plugging means less heat buildup that dulls the bits. The nine-piece set comes in a plastic storage case and contains the following sizes (in inches): 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4. —Tested by Pat Lowry

Product

Performance

5
Average: 5 (1 vote)

Features

5
Average: 5 (1 vote)

Ease of Use

5
Average: 5 (1 vote)

Value

4
Average: 4 (1 vote)
4.8
out of 5