On Fri, 20 Jan 2017 13:31:41 -0000 (UTC), Doug Miller
wrote:

-MIKE- wrote in news
[...]

Maybe one day I'll spend the cash for an excellent set of dado blade
that do, in fact, produce a perfectly straight and square bottom withOUT
bat ears and I won't feel the need to clean the cut up with the router.

Check out the Northwoods Dado-Master from Ridge Carbide Tools
http://ridgecarbidetool.com/dado-set...do-master.html

I've had mine for about 15 years now, and have been completely satisfied with it. I bought it
at the Woodworking Show when both Forrest and Ridge were exhibiting, and compared
test cuts from the two side-by-side. I couldn't see any point in the Forrest Dado King: why
pay more money for lesser results? The Ridge dado set is two-thirds the price of the
Forrest, and gives better cuts. The bottom is dead flat, and the bat ears are almost
imperceptible without a magnifying glass, whereas the Forrest leaves tiny but still readily
visible bat ears.

The bat ears are intentional (glue recess), no?