@Fredymac, did you get fire or just smoke? Not stupid, that’s how we learn new stuff. I usually run 1/4" bits at #4 on the Makita router and 100"-120" / min. depending on wood density. The chips come out warm and the bit stays cool. The Vectric software has a built in chip load calculator to use as a starting point so if you get close with the speed and a conservative feed rate, you can increase or decrease the feed rate in gsender to get warm chips and a cool bit and take a note of the feed rate you are using FOR EACH TYPE OF WOOD. I have not run the router above #4 yet…
@jepho yep, MDF is bad for lungs! I use hot glue for hold down so never surfaced the spoil board, only the board that is glued to it. I do have a lot of oops depth settings that went into the spoil board though doing cutouts. When I can’t glue around the oopsies, I’ll just flip the board over and carry on. I will plug your speed settings into Vectric so it will recalculate the chip loads and thanks again for your testing!