Learned another lesson today. All plywood is not the same. Had to buy some more 1/4" plywood for my drawer bottoms. Went at it like I did the other 4 drawers and realized the new plywood was much thicker. No way would it go into the dados. After 45 minutes of sanding with 80 grit I learned lesson number 2. When you try to thin out plywood on the edge you end up with a tapered edge and it still won't fit right. I've set it aside and tomorrow I'll widen my dados to fit the plywood. (should have tested the fit on scrap first but I assumed all 1/4" plywood was the same)
Man... I could write a book called "What not to do"
Man... I could write a book called "What not to do"