Well, thanks to advise here I bought the Freud 508 (again) instead of the 608. I had a 508 a couple of years ago but I never used it and I sold it when I moved. While thinking about some cuts that I want to make I came to a question. If someone wants to cut a rabbet with a dado set, do you need to have some sort of sub-fence on the real fence? Otherwise, don't you run the risk of putting a nice partial circle groove on the fence and quickly dulling the nice, new, sharp edges on the blade?
If so, is MDF ok to use or is there a better material for the sub-fence?
Thanks for the help.