My shop is too small to run full sheets of plywood through my table saw, so I always break them down to manageable size outside the shop. I built a table frame about the size of one of those banquet tables and bought a set of banquet table style legs from Harbor Freight. The only metal in the table is the legs and the screws that attach them. The frame sides and ends are 2X4 on edge with only the necessary cross pieces needed to attach the legs are all 2X4s laying down and attached level with the top of the edge frame using biscuits and glue. The rest of the table top is completely open.
I can lay a full sheet of plywood on this table and use a straight edge and my circular saw (set to cut through the plywood plus about 1/4" into the table) to make all of the needed cuts. The great part is that none of the plywood pieces fall as you complete a cut, so there's no broken corners, just clean straight cuts. When the cut is complete I set the saw aside and pick up the piece that I want, or move them around, line up the straight edge and make another cut. The table works great for framing lumber too. If/when the top of the table frame gets too cut up I'll just make another and move the legs over to it, with one exception. I've decided that 2X4s are not needed for the outside edge frame. The next time I'll use 1X4 for the edge frame and keep the 2X4s for the cross pieces to hold the legs. It'll be lighter and easier for this old man to move around.
I recently added some cleats to one side with one screw in each. I can turn them so they stick up above the table by about an inch or turn them so they are down below the table surface. I can now load a full sheet very easily. I tip the table on it's side with these cleats turned up but laying on the ground. I carry the plywood over to the table on edge and set it against the table top and on these cleats. Now I reach down and pick up both the plywood and the table frame at the same time, tipping the table upright with the plywood laying on top of it. I no longer need help to do this.
When folded, the legs fit up inside the frame and the whole table fits in my lumber storage rack, completely out of the way.
I've helped 2 friends with house remodeling work and brought this table with me. They laughed at first, saying saw horses were the way real carpenters worked, but they tried it out and then used it the rest of the day. Now both have made their own cutting tables and their saw horses sit unused in the corner of their garages. The table frame makes a great expansion table for picnics too. Just get it out and throw a sheet of plywood and a table cloth on it.
Charley