You use a miter saw? I have seen where you can do it with a jig on a table saw, but not with a miter saw.
don't be getting touchy (not you in particular) about my listing things like this when they could be made on a saw. I know not everyone has a table saw of power miter / chop saw and those who do, aren't very, uhm, (trying to thing of the word) not secure, ah hell, i can't think of the word, but don't exactly like to use them that much. (i myself had a chain saw accident where i almost last 3 fingers where they attach to the hand about 15 years ago and I am still a little Leary of some power tools).