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Countersink Drill Woodworking Drill Bit Set Drilling Pilot Holes For Screw Sizes #
A pilot hole is a small hole drilled into a piece of construction material. Its purpose
is a) to guide ... The pilot drill may be a standard twist drill, another type of drill bit
appropriate for the material, or, when the primary purpose is precisely locating ...
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Drill Bits Buying Guide
They may require a pilot hole to keep the bit from wandering. Bits with steeper
points — such as those with 118-degree angles — are suited for softer material.