After I bought a table saw that had enough power and a long enough arbor to handle a 6" diameter x 3/4" wide, stacked dado set, I took a chance and bought a cheap carbide toothed set (not even brand named). I'm not sure, but I think it's from China. I've left it mounted on my "dado table saw", and use it for any dado cuts I make; mostly 3/8" deep dado's for joining the edges of super components, and the frame rest rabbet. I also use it to remove the waste on frame Top Bars, leaving the ears/lugs that support the frames in their hives, and I also use it to cut 3/8" deep x 7/8" wide grooves in the top edges of my homemade End Bars, just before making the final cuts that separate each individual End Bar, from their blanks. I use a sacrificial fence, adjust it so the 3/16" ears (providing a 3/8" bee space between frame Top Bars, once assembled) are left on the 1-1/4" wide, End Bars on the outside of the dado blades, feed the blanks about 1/2 way through, then reverse it, feed it all the way through, then reverse it again and the dado removes the remainder of the waste, this provides me with a nice, clean cut in the End Bar blanks, with almost no tear-out, and in just three passes per blank. Then they're ready for each individual End Bar to be cut off on the band saw. I keep all my tools, clean and lubricated between each use, and this $40 dado set is still serving very well, going on six years, now.