Reply by dmorrison

Thank you for the information. I’m afraid a hardwood or MDF insert would not be very strong. The insert is made out of sheet metal, about 14 or 16 gauge. A small clip in the rear holds it down in the back and the front screw secures it.

If you have used your technique on a sears direct drive table saw please let me know. That would be great, he could make a couple of zero clearance inserts

Dave