Thanks all and Al I find that when doing inlay with two 1/4" pieces, 3 degrees seems to be the angle that works. Of course if you are doing inlay with a hard wood like purple heart or even a maple, be sure to not push or force the blade to cut or it will change the angle and the fit will be either too loose or too tight. Since I glued the inlay pieces on to another piece to create a 1/2" thickness, it didn't matter if the inlay went perfectly, I just pounded it in to make sure it was in there. It may have sat about a 1/32" proud on the surface, but who cares, just sand it away and cover the backside and no one knows.
