A small hole drilled as a guide for the insertion of a nail or screw, or for the drilling of a larger hole.
- A pilot hole is a hole drilled with a bit that is slightly thinner than the shank of the nail.
- Pull the hole saw out and begin drilling from the other side using the pilot hole as your center guide.
- To avoid this, use a cordless drill to drill a pilot hole, one slightly smaller than the shank of the nail and then drive the nail into this.
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