"AggieSawDust" wrote in message
oups.com...
Thanks everyone for the replies, you have eased my mind. My last
question regarding ZCI's are, do most of you just keep this in all the
time (except when mitering or dadoing of course)? Is there any other
reason to use the stock insert?

Leave it in unless you are tilting the blade.

I made a half dozen from MDF and use them all the time. A few are cut for
dados of common widths. You may find the method that was posted here over a
year ago. It was a simple thing to do tracing the original insert and then
using a router to follow the master. Drill some holes for leveling screws
and you are good to go.