Join Date: Oct 2012
Location: Eastern Kentucky
Nobody said it just like this so I will. I read that a general rule for dado depth is NO MORE THAN 1/2 of the thickness of the wood the dado is cut into. It doesn't mean it has to be 1/2 the depth, just no more than that. Like Cabinetman said, 1/4" works for him, and I'd imagine he's done that in wood 3/4 thick before so he only went 1/3 of the depth there.
Everything I make from wood is useful. I can soak up spills with the sawdust, and keep warm burning the rest.