This weekend I spent a while reconditioning some old hand planes and then onto making a crosscut sled. I used maple for the runners at the suggestion of posters to this forum. That worked out very well. I attached them to the base of 3/4″ birch plywood. I haven’t yet attached the fences and was wondering what most people use out there. The first time I saw a crosscut sled was on a woodworking video which featured Jon Eakes. It appears that he used 2X4s for the fences and double them up in the center which where they come into contact with the saw blade. This looks like a good solution. He also attached a block of wood behind the back fence for safety since the blade will be running into this block. Then he attached a piece of plexiglass which would be attached to both fences above the saw.
I have seen other designs that incorporate a handle (sort of like a saw handle) on top of the back fence so that your hands are not near the saw blade.
I’m most concerned about the fences. I plan on using 2X4s and doubling them up in the center. Any ideas, suggestions would be helpful…