Dave, I just mic-ed a #70 and it measured 1/32.
Jerry, You can cut with the blade upside down, but it puts all the saw dust and fuzzies on the top side. More than most saw blowers can keep up with blowing away. Plus feeding down through that little hole through the table top hole with a zero clearance piece on it, makes it all even tougher. I get along fine as a bottom feeder, and because I use a Hegner, bottom feedind is the only option on it. I just have tried the top feeding on the Ex and before the Ex a DeWalt and guess I am not coordinated enough.
Guess I am just mainly curious if those that top feed accomplish it with the small holes and blades. Dave does so I will probably give it some more tries.