• If your material choice is governed by prettiness instead of sound engineering principles, I would suggest some testing.

    Seriously, tho' are you drawing for the sake of drawing or intending to make something useful? If useful then I would go for fairly serious over design (in composites for eg) if you haven't got deep pockets for proper fatigue tesing, or........ use well-understood materials (eg steel) and a well-understood fabrication technique.

    Uh, and some public liability insurance....

    my 2p...

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