dreadnaut

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One source for aluminum tube is here.

http://www.aircraftspruce.com/catalo...ube_6061t6.php

This is a source for Carbon Fiber tube = Lighter, but more expensive.

http://www.wildharerc.com/html/prices.html

Rather than find a cardboard tube, make your own sleve from 2oz fiberglass. Doing it this way will give you an incredably good fit.

Wrap your wing tube with two wraps of 1 mil painters drop cloth. use scotch tape to secure it to the tube at the ends.

Cut a square of 2oz FG 15''x long enough to wrap twice (2x(pi)xtube diameter)

Wet the FG w/finising epoxy like Z-Poxy, and wrap it around the tube. Wear vinyl disposable gloves when you do this. Squeege off excess epoxy and set the tube on stands so that the layedup sleeve doesnt touch anything.

When the epoxy is dry to the touch, but not fully cured (about an hour for Z-Poxy) pull the sleeve off the tube, and remove the drop cloth from inside the tube. This is easy since the epoxy doesn't stick to the painters drop cloth.

Now slip the sleeve back onto the tube and allow it to cure for 24 hrs. This is important. if you allow it to cure with out removing the drop cloth, it will shrink and become very hard to pull off. The 2mill wrap of drop cloth not only acts as a release film, it also alows for shrinkage.