Re: ATM Can one use 0.035" wall-thickness truss tubing?

[Dave Sopchak <das@po.cwru.edu>]

Hi there Carl,
        FWIW, my 10" dob, using 46 inch segments of 1/2", .035" wall 6061
aluminum tubing works just fine. The weight of the eyepiece end is probably
about five pounds. I'll bet that this wall thickness would work fine for
you in a 1" diameter.

Clear skies,
                Dave


>Hello out there,
>
>      Anybody have any experience OR educated guesses with 0.035" wall
>thickness, 1.0" OD Aluminum (6061-T6) tubing?  How will this thin a wall
>behave over 5' lengths on an 18" ultra-light Dob?  Haven't yet
>calculated the total weight on the upper end, but I think it'll max out
>at around 12-15 lbs.
>
>
>Sincerely,
>
>Carl Woebcke
>carlw@telis.org


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