I am in the process of designing a workbench for my home shop. My current plan is to make a solid top (about 27″ wide) out of 12/4 maple, surrounded by an apron of 8/4 maple. The ends and sides of the apron will be joined with dovetails (which seems to be fairly traditional). My question is how to deal with expansion in the top with respect to the apron? It seems like if the top expands, it will pop the dovetail joint apart. Is that right? If so, how do I design the joint to account for the expansion?