I have some hardwood, maple I believe, locker benches from a school renovation, and am thinking of using some of them to build a woodworking/ layout bench. Or possibly just a bench top that I would lay on horses as needed, as I already have three 8' benches and one 6' bench, but these planks keep begging to be put to use, and I can already envision it with some rows of holes for dogs, a wood vise or two, and some layout lines. Anyway, each plank is about 9-1/2" wide, and it looks like they'll ebd up being about 9" by the time I rip the beveled corners off. So, the question is, what's the best way to secure 4 of them together to make a solid one piece top? I do have some perfectly straight 2x6 clear maple planks, with which I could simply make cleats for the bottom. And, along with something like that, I assume that I would want to either dowel them, or dado the edges, and rip an industrial strength biscuit. I had also considered dadoing a groove across the bottoms, and setting a threaded rod in there to draw them together, but not sure that would have a lot of added value. And, as for glue, Gorilla Glue? Well, anyway, I'm just starting to kick some thoughts around, and may not get to it real soon, but would appreciate any thoughts, comments, or suggestions that anyone might have.