I just got finished reading a real good dovetail book by Ian Kirby. And he mentions doing two face sides and kind of cleaning up the other two, and then he always keeps his face sides on the inside and bottom of his project. He also cuts his pins about 1/32 or so shy of the the surface and finishes his box down to to the end grain. He claims it was standard practice in the old days for crafstmen to do this. I have been doing carpentry for a good 20+ years and only new to taking joinery serious ( ie doing more than just screws glue and the odd rabbet) So trying to wrap my head around it is rather brain damaging. But staying on topic,I have been s4s ing every piece of wood I can find at the moment. Getting pretty good if I do say so myself.