Re: ATM Carbon vs. Glass fiber for tube

[Bratislav Curcic <epabcc@epa.ericsson.se>]

Dave Pitou wrote :

> The wall thickness
> of a 6" x 6 ft. tube should be about 1/8" for decent stiffness irrespective
> of the material used. If you use a .013" thick carbon cloth the tube would
> require about 10 wraps, or about 10 yards of cloth, which would cost about
> $450.

This would be a criminal waste of money and material. Stiffness comes
from keepeng the layers APART, not bunching them together.
Use lightweight cardboard tube as a filler and lay carbon on the outside
and on the inside (2 on the outside and 1 on the inside is heaps). 
It will be stiff as a rock. 

Bratislav