I installed my Freud 6" dado blade in my table saw in order to cut some box joints for recipe boxes I am building. When I did my test cuts (see photo below), I noticed a very poor cut with uneven bottom of cut. I thought maybe I had a bad blade set, but on investigation I noticed that the blade against the arbor fence fit snugly on the arbor. But the second blade has some play on the arbor, which allowed the blade to dip below the inside blade directly below the arbor, thus the outside blade cut deeper than the inside blade. If I held the blade so that the arbor was more or less centered in the blade hole, then tightened the arbor nut. This produced a much better bottom to the cut.
So, my question is: Do I have a bad/cheap arbor? and is there a standard solution for this? such as a ring or shim or something, or do I have to fudge this when ever I use it?
Thanks for any help, and I hope I was clear enough.
Mike