Here is mine. It's 56" by 36". 3/4" top plate. I plan on doing something to be able to set up jigs, but have not gotten that far just yet.
I used angle iron flipped outwards, for the top rails and support instead of square tubing. That gives me a nice clamping overhang. Lockable casters as well. I try to keep everything mobile in my shop, so that my space if more flexible. I can manuever everything to suit the job.