I had to make a 7/8" dado today. Since my dado set only goes up to 13/16" I
put a 1/2" dado assembly in my TS and cut a groove. I moved the fence 3/8"
and cut a second grove. It only took one adjustment to be perfect.

It was faster and easier than most dados I have cut, where you have to fuss
with the spacers.

Is there a downside to this method I am not seeing? If not, I will do all
my dados this way.
Thanks.