You can get a blade ground to whatever angle you like. I think Forrest and others sell them ready made at certain angles. For the amount of cutting that gets done, a fellow who does this a lot bought a Freud full kerf rip blade on sale and had it re-ground for a total cost of about $50. He reports having used it quite a bit and it still cuts great. I have not take that step yet as I want to do a few more and see if they catch on with me. I haven't found much use for dovetails in general (except to admire looking at) but, people expect them.
Originally Posted by Darren Wright
Any sufficiently advanced technology is indistinguishable from magic.
- Arthur C. Clarke