Thinking about building a new workbench. The present thinking has the top overhanging on each end. One end for the installation of a wood vise. The other end will have a mechanics vise, kind of big, kind of heavy. If I make the top out of two layers of MDF will the overhang droop down over time? How about plywood, would it droop over time? Not sure if I'm up to building a plank top.
TIA