Just retired from a working investigator and have taken up woodworking and am now the proud owner of a lot of tools...sort of the poor man's version of Tim the Toolman. I am curious and learning the fascinating world of wood and what one can do with it. This forum got me to try a 45 degree chamfer bit to bevel a small piece of half inch plywood using a $3 bit....bad idea. It can destroy a beginning worker's confidence. Ah but a Freud bit and a little practice can pay off. However I am curious as to how to make a plate insert to accommodate my new 2 1/2 inch diameter chamfer. It does the job and leaves no edge when raised just above the insert that came with the routing table and lift but obviously I can't drop it below the 1 1/2 inch opening of the insert. Can I safely take off the insert and work it up and down as I need?