Not sure about the camber, etc., I just make sure that one side of the plane is flush with the low edge. Then the plane (area where there’s no iron) just rides the low side like a pivot until things level out on […]
I did a few years ago, but I topped it with hardboard as well–I use it for my finishing bench and for some other work that my main bench shoulder vise can’t handle. I built the main bench this past winter because the plywood bench was too small. Both are good, but I prefer the main bench top which is laminated yellow pine.