Host David Thiel is joined by guest Eric Elsmore to discuss how a hammer drill can be used in conjunction with masonry bits.
Safety Note: wear safety glasses when cutting into concrete.
You can drill into concrete (figure A) with a regular rotary drill, but a hammer drill is the preferred tool. In addition to rotation, the hammer drill has a percussive action that makes the bit go in and out drilling a hole more quickly.
There are specific bits to use for drilling into concrete (figure B). One has a flat cutting head, and can be used with a rotary tool. Another bit is called a hammer drill bit. It has a beveled cutting edge that blunts the bit.
If you're drilling into allot of concrete, you may want to use an industrial masonry bit. These bits have notches on the ends (figure C) that prevent them from slipping out of the chuck. The cutting edges are similar to regular masonry bits, but the flutes are designed to keep a lot more dust out of the way.
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