Simple Shelving Joints wrote:
Start by installing a dado blade in your table saw. Stack it to a cutting width that's narrower than the shelving plywood is thick—5/8" works well (see Photo 1). There's no need for shims with this joint. You'll adjust the thickness of the rabbet's tongue to fit the dado.
I don't think this would buy me anything personally. First, my dado set cuts undersized anyway, I have to shim to get 5/8" or 3/4". Second, I would rather take the extra time to shim to match with multiple test cuts until satisfied and keep it a one step process. Two steps for me is two chances to bung it up.
Thanks for the link though, it is still a great tip to keep in the hip pocket.
r