I have been routing 3 and 4 inch circles and I have had issues with tear out and burning. The tear out is when I get to the end grain and the burning is when I stop to get a better grip on the small circle. It's really hard to get a smooth and constant feed on small circles. I am using a MLCS #7821 bit which is a cheap bit but it is sharp. I have ordered the same bit from Whiteside so y'all will be happy. :wink: :grin: (I am kidding) Also I am running the bit at the right speed and using my router table. I can't think of any more information so what is your suggestions?