[Woodnut65]

Hi Stan: The smaller the diameter of the pattern bit the more tear out you get. If the diameter is 3/8" you can only remore less than three 16ths. I bought a set of rabiting bits from Infinity. The set comes with a bit that is about 1 & 1/8th ", and a set of bearings for different rabits, plus a bit to make it a trimmer. That is the bearings mount to the bottom of the bit. I had band sawed out some things to reproduce and used the big bit. It resulted in no tearout. If you can get a spiral pattern bit that would also be a way to go. I have not seen a spiral bit with the bearing mounted to the top of the bit. Good luck with it.. Woodnut65