Here's a photo of our garden with my wife for scale. Full disclosure: she's 5 ft tall
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This has been the coolest, wettest spring/early summer I recall so the garden is considerably behind its usual schedule. We're hoping for a long Indian Summer. The garden is close to 2,000 SF and in addition to tomatoes we grow the usual suspects. Not shown: a 4 x 20 foot strip behind the main garden for the winter squash. They want to spread out a lot so they don't play nice with the rest of the veggies.
I made the tomato cages out of concrete reinforcement mesh. It has a 6" x 6" grid so large enough to reach through and harvest the tomatoes. To save storage space they are made to fold up when not in use. I made a bending jig to bend the cut ends of the wire and they form the hinges. The jig is driven with a socket wrench to wrap the wire around a mandrel, and happens to be one of the first practical things I made with my lathe. It's been loaned out to a number of gardening friends so they could make their own tomato cages with it.
If unfolded the cages also can be used as a trellis for growing cucumbers and pole beans. I also have used the same scheme to make smaller cages for our pepper plants. For them it seems to work out better if the cages are triangular rather than square.
So far we have bought two 120 foot rolls of the mesh for garden-related stuff (but a number of cages have been sold or gifted to other folks). I'm about halfway through the second one. When rolled up it can be in considerable tension -- i.e., it initially wants to escape! I use carabiners to restrict its wanton ways so I can release just enough of it to cut into panels.