I have my dad's Craftsman Kromedge dado set he purchased for use with the Montgomery Ward RAS he had that I also inherited. I don't believe he ever used the dado set. I have saved it in case I need to cut dado's in construction grade lumber or older lumber that I don't want to use the carbide dado blades for. I also have the original Delta flooring blade for the chop saw that I keep for the same lumber. No sense in dulling the nice carbide Woodworker blade.
Basically, a tool is an object that enables you take advantage of the laws of physics and mechanics in such a way that you can seriously injure yourself - Dave Barry