My build table was from two sheets of plywood, one for the top, the other cut into,
3 full length rips about 200mm wide, these where used on edge down either side of the top,
Whats left of the 2nd sheet we cut two end profiles that the rails tennoned into, two on the top edges and one down the middle lower down, then we added a few cls rails across the way and a few diagonols,
Hope this makes sence, hers a pic with the man himself
I can do you a sketch if you want me to?