Quote Originally Posted by marbles View Post
I can see from cutting through 9mm ply using 2mm passes that the tip of the single flute cutter is blacking pretty quickly. The timber is not blackening but 20mm/s is not very fast is it ha ha and probably part of the problem.
What size tool, and how many flutes?
What feed and speed did you use?

Try 4-5m/min at 15,000 rpm.