Quote:
Originally Posted by Peter.M
The sleeving that I am using should impart most of the strength because it is Biaxial weaved.
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I may be wrong here, but I would have thought you would want all the strength to be longitudinal. If the tube is mounted in the middle, the weight of the mirror at one end, and eyepiece/camera at the other would be trying to bend the tube like a banana. The biaxial weave is at ~45deg to this axis. Considering all the strength in carbon fibre is in tension, I would have thought plain, twill or harness weave, if laid 0/90 deg to the tubes axis, would impart more longitudinal stiffness than 45 deg biaxial? To my mind, at 45deg the load is mostly carried by the filler and not the fibre?
I have also got a reply back from Jon Soller:
Hi Simon,
We commonly ship FedEx to Au for packages over 40". 20 yards of spreadtow will cost approx $159 for shipping via FedEx.
If this is of interest please let us know.
Best Regards,
Jon Soller
Soller Composites, LLC
This also seems to be just
slightly 
cheaper than the standard USPS option($233!!)
