How to build a one-piece
folding picnic table out of 2x4 lumber
Step 13. Add the backrest stop
With the unit still on it's knees (so as to speak), and the clamps still holding everything in place,
now is the time to fix the backrest stops.
Fix one to each rear leg (c) up against the side of the tabletop (currently clamped in seat mode).
Now you can stand it up, take the clamps off, take out the cardboard packer, and open it out to picnic table mode...
But wait!!! There is nothing to stop it from spreading out too far. We need a spread stopper.