Wobble Dado

[fixtureman]

I got a couple of the Sears wobble blades that came with a blade that I needed both work very well and the groove is nice and flat.

[BobW]

As others have said, it's all I used for years, and it worked fine.  It's been about 35 years since I switched to stacked dado sets, but the main issues I remember having are that it could be trial and error getting the width right, and, if making a deep dado, do it in multiple passes.