Drill guide
thingiverse
A Step-by-Step Guide to Drilling Accurate Holes with a Hand Drill To achieve precision when drilling holes, consider using a hand drill equipped with interchangeable drill bits in various sizes: 3/8, 5/16, 1/4, 3/16, 1/8, and 1/16. These drill bits are designed to make clean cuts through materials. The pointers on the hand drill serve as guides, enabling you to align the drill bit precisely with the center lines drawn on your workpiece.
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