I had to drill some 1/4" holes in the cast iron top of my DW746. It was
pretty easy if you follow the directions. They include a little jig for
setting the height of the mounting angle iron. All you do is clamp the
front rail to the top with a couple of pipe clamps and get it lined up with
the little jig, then drill the holes using the holes in the rail as a guide.
Works pretty well. You could go back and drill them out a 32nd bigger if
you really want the adjusability, but I found I didn't really need it. The
back rail is not critical since the fence doesn't ride on it. Mine is a
commercial with the long rails, BTW. An excellent upgrade, by the way.

Good Luck

Charlie

"philly45" wrote in message
link.net...
Has anyone had to make modifications to their table saw to mount a
Biesemeyer fence system (Commercial or Home Shop)? What's involved with
the
process? How difficult was it and did fence accuracy suffer any?