Dave, that is a lot of work going on. I like the concept of the scenery, (river, lake, dirt road, overpasses) The castings look great! It can be a messy job for sure. I see one support leg under the widest part of the lake I believe. How much plywood overhang are you leaving past the supports. I am thing=king of doing the same thing. If all that is out in the aisle over the aisle is lightweight scenery, then I should get away with no supports very close to the edge. It's kind of like the idea of L girder, where a few inches of tabletop can be cantilevered beyond the edge of the support. Not a lot, I'm sure.
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