Larry Jaques wrote:

Metalwise, I'm too cheap to buy a real masonry hoe. What's the best
way (type of holesaw?) to put a pair of 2 or 2-1/2" holes in the
blade? http://tinyurl.com/32mo86 I'd play with a plasma cutter if I
had one.

Hole saw in your drill press, keep the speed down, and lots of oil.

Wes