I just received a Delta 14-651 mortiser from Coastal Tools. The unit arrived with no shipping damage and was set up and running in about 10 minutes. I have cut 1/2" and 3/8" holes and am so far pleased with this exception: It seems to me, that I am doing quite a bit of clean up to square the corners and remove other left behind material. The amount of work is MUCH less than when producing similar joints using a brad point bit and drill press but I was hoping for a little better result from a dedicated mortiser. Does a better set of chisels significantly improve on this or should I just expect to do this clean up?
Thanks!