Quote Originally Posted by AGTM View Post
For me is interesting why single flute, why not 2 or 3 flutes?
Because of machine stiffness and feedrates at DIY level. With 3 flute you need much higher feed rates at lower DOC and most DIY machines can't cut at those feeds and are not strong enough or have powerful enough spindle to cut at correct DOC for 3 flute cutters.

I agree thou they are better than single flute and give nicer finish if you can use them.