I use 1-1/2" solid inside 2" tubing 1/4"wall tubing, for a boom.I found
some at a scrap yard in Ocala, FL, for $2.00/#. I only reinforce the area
that is attatched to the rotor, about 2' long. I file off any burrs in my
metal lathe. It has to be a bit of a loose fit, to be assembled.
That which does not bend, may break, YMMV
Good luck, and God bless!
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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