Cleo, I was being funny (or attempting), that was why I went from discussing anal super critical to right back to the conclusion you stated of “it does not matter”. I need to use more of the little dancing things since you cannot see the crap eating grin that I generally wear. I also think that the forces applied to the joints in all of the tests that I sited are not in the correct direction. Who would try to pull the front off a box? How could you rack a box full of frames to a pressure of 2000 lbs?
Would I buy a box with rabbet joints? If it was cheap enough. I squeeze two nickels hard enough to make a quarter.
Peter, I am making all my new gear out of hemlock and would not think of not priming it before putting two coats of paint on it. (still making my bottom boards out of cedar and I need to get on that job pretty quick.