Quote Originally Posted by TrickieDickie View Post
I learned very little from that, so the manufacture decided to make the plywood thinner to save money...so that is it. How much more expensive would it be, it is damn expensive now. It appears all plywood is thinner than the posted retail thickness, I remember a time it was not. I thought it has something to do with going metric.
Yeah, I hear you...it does feel like a ripoff when the prices go up and the material gets thinner. I’ve definitely noticed that shift too.
The video was just a quick heads-up for beginners about why dados might be loose if they assume plywood is exactly 3/4”. But you’re right...it goes deeper than just "saving money." Some plywood is made to metric sizes (like Baltic birch), but a lot of U.S. plywood is just shaved down to reduce cost and still technically qualify as “3/4” by retail standards. One sheet times millions of cuts? It adds up.
It’s frustrating...but knowing the trick helps avoid sloppy joints.