David, while the usual recommendation is 2 flute bits for most wood cutting, for the smaller tapered ball nose Ron Reed at PreciseBits recommends 3 flutes because the bits are quite a bit stronger, allowing a bit more aggressive feed rates. He has presented at our CNC User Group a couple of times, and is extremely knowledgeable. PreciseBits has some excellent tapered ball nose bits, and their shop is only two miles from where we usually meet. I also have and have used some of the import ones, and they are fine, but in my opinion, the PreciseBits ones cut a bit cleaner
For a project I am working on, I will shortly doing be some side by side testing, same design, same wood, different bits, so I hope to have a little more evidence as to whether my opinion can be substantiated.
Tubular latex pressure vessel configuration engineer
Last edited by BalloonEngineer; 05-22-2019 at 09:19 AM.