I have a simple break and a shear, but not large enough for this size work. I'm sticking with composites since that's my field of expertise. A composite tube will allow high strength and rigidity without the weight of aluminum. I like your idea of a tube split longitudinally. You could hinge one side, and have a "pod" insert to carry stuff that is removed on-site. Maybe turns into a bench or table or some other dual purpose. --- Kim <kimharch@cut.net> wrote:
Chuck:
I've also considered options for using tubular sections that are collapsible or split along the axis of the tube to allow more room to carry other equipment in the car. Do you have the capability to form sheet metal? I've wondered about a large-diameter aluminum tube formed from two half-cylindrical pieces, joined with a simple flat joint at the seams. A couple of screws could hold the whole thing together. I've also considered beginning with cylindrical sections, then "carving" away as much as possible while keeping the strength of the cylindrical form intact. I've never seen such a tube, but I'd be surprised if it hasn't been done.
Kim
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