I used my 2 1/2 inch dry cut diamond core bit on some fairly hard brick and it did a good job with drilling a perfect hole in short order. The only thing that occurred was that the set screw on the SDS adapter for the center drill loosened and fell out. I will be purchasing a new set screw for my adapter and this time I will use be using loctite to prevent it from coming loose.
7 years ago
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