Jim, I do keep my bits sharp and clean and move at a good, steady pace. I generally only have burn issues when running long pieces over the router table and making a slight hesitation when shifting position so this surprised me with such a short, shallow cut. (I had made four passes to route the 3/8" depth.)

Paul, It was a regular 3/4" straight bit. The only time I’ve used downcut bits was when cutting through-mortises so the sawdust can exit. What a horrible nightmare that must have been for your friend with the CNC! It’s a good thing he didn’t set the CNC up to route and then go to bed, thinking it would be all done in the morning. It would have been ALL DONE in the morning!

L/W

“Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety.” Benjamin Franklin