I installed the Prazi on my Skil "77M" and used it to cut 11 7/8" engineered floor joists to length and square. It worked beautifully! No other "beam cutter" saw could cut that wide of joist in a single pass without cutting from the side of the joist. It also allows me to stack about 5 to 6 2x rafters up and cut the bird's mouth cuts all at once. I did find that the saw causes tear-out at the top of the cut, so it is a good idea to use a utility knife to scribe a line just outside the limits of the cut to prevent that.