I'm finishing my workbench and am thinking of adding end caps dovetailed across the full width. My thought is a tight dovetail over the full width will allow me to not have to glue or bolt anything while still providing stability for the top. The top is about 4" thick by 28" wide and hard maple. My question is how? The end cap will be relatively easy, but how do I cut this dovetail on my top? It seems like a circular saw on its side won't be very precise. Thoughts?