If you have trouble “eyeballing” level holes as you drill, simply strap a line level to the top of a drill with rubber bands.
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Never-Fail Level Drilling
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If you have trouble “eyeballing” level holes as you drill, simply strap a line level to the top of a drill with rubber bands. Set the level on a flat part of the drill housing that’s parallel to the drill bit. Keep an eye on the bubble for great results. — Roy Lee Hill