So here is an extruded polystyrene foam board, available in black in thicknesses of 3/16, 1/2, and 1 inch...which is dimensionally stable, easily workable with circular saws, routers, etc., is reasonably weather resistant, and, at least from what I can gather, weighs in at anywhere between one quarter to one eighth(!) that of most plywoods of the same dimensions.
Looking at how large (especially ULF) cameras tend to "wiggle," and thinking of a material which is ultra light and offers the possibility of employing relatively large (and thus very stable) cross sections without adding weight, I find very compelling.
Has anyone used this material for this use...or is thinking about this?
Looks a bit difficult to get this stuff in anything but large(ish) quantities...but I'll phone the company to see if they might work with me on this.
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