Thanks for sharing, Mac.
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Jason,
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My approach would be to model this part up on the computer to figure out all of the jigging and fixtures. A circle will be far less headaches than an ellipse. Building in sections and then fitting all together seems like a manageable approach.
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Re: additional support in the long dimension. Are you concerned that it might sag on the long ends over time?
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I like the hollow torsion box idea to shave some weight and movement, especially with the metal band around it.
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Steve
