Re: ATM Cutting plywood circles

[AMaroney@sptimes.com]

Is there a trick to avoid burning the router bit when cutting ply circles?

Use a straight, sharp, carbide tipped bit.  A sacrificial backing board 
will help make a clean exit cut.   Keep the router moving.  I have found 
that spiral bits, especially up-cut spirals, make rough cuts.   I make at 
least four passes to go through 3/4" plywood.  An 1/8"or 1/4" roundover 
finishes the edge nicely if you're not putting a veneer on the edge.  Fill 
any edge voids with a 'router dust' and epoxy mix (or plane epoxy)  before 
coating it (I like spar urethane).