Damon,
I have now improved the rigidity of the design by using 8 wire rope clips to secure the horizontal ribs of the cage together, instead of the zip ties.
If you hand tighten them with a nut driver to be snug, the joints still will twist easily to fold up the cage. The flattened cage measures 42 inches wide, by 61 inches high. Keeping them inside during the Winter will obviously prolong their life, as well as the Yard just looks better, according to Dear Wife.
Anybody want to buy 32 (slightly used) Glamos heavy-duty tomato cages???
Raybo