Rotabroach Rotabroach
Rotabroach Hole cut with common hole saw
Rotabroach Hole cut with rotabroach
Rotabroach Comparison of hole saw and Rotabroach
Rotabroach Rotabroach Kit

Rotabroach Gallery

These are about the best thing I have found for drilling out CLEAN holes in aluminum. They are about the same price as a hole saw kit but do a much better job. I picked up my set at Amazon.

EZ260 Tube Amplifiers and Tube Projects