Mimimizing weight of a rolling platform
Not sure if this is too off-topic to be against the rules, but I thought the people here might have some good input.
How would you design a rolling platform about 32″ tall x 36″ wide x 60″ long to be (1) safe as a stage prop to be danced upon but (2) lightweight (3) easy to build?
I built one a few years ago that you could call platform-framing-inspired. It is excessively heavy. Some of that is also due to it’s modular design–I wanted it to be easily disassembled for storage, but that feature has never been exercised. Anyway, the first thing I would do differently is probably use thinner plywood and a little less framing, but perhaps there is a better way to go about it?
Would it be smarter to build cross-sectionally? That is, make rectangular cross-sections out of 2/4s then join them with plywood, essentially making one big box? Maybe use 3/8″ plywood/OSB on all surfaces except the top where it would be 1/2″ or 5/8″. Or even just use cross braces at all surfaces except the top. I’m guessing this case would call for at least 3 structural cross-sections, which would then call for 6 wheels instead of 4. Plus I may want some minimal framing (2x2s?) between cross-sections at least on the top in order to screw down the perimeter of the plywood.
Or another idea is to frame one big cube (or more properly, right rectangular prism) and surface/cross-brace it.
Is there some other way to go about this that I’m missing? Other materials? Recommendations for appropriate plywood/OSB thickness? A subfloor material lighter than plywood?
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