I'm kinda curious on the size of your cutter. I mean, 1-3 minutes to cut a flat backed 2"x3.75" hole in masonry walls?
In fired face brick too? My company almost exclusively does electrical remodel and additions in existing structures, so we make cuts in a LOT of masonry walls. That's some router (and bit) you must have there. How many guys does it take to hang on to that sucker?
Oh, and I'm in the Midwest/Great Lakes area of the US (Indiana)
Dallas