Fiber alignment and twist.

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Howdy,

If I have a long recatangular box like a spar, and want to reduce
twisting in the long axis, is it better to lay out the fiberglass mat
with the fibers aligned at a 45 to the length, or parallel to the
length?

For the sake of argument, presume that all I'm concerned about is
twist.

Thanks in advance!

[Oliver Arend]

> If I have a long recatangular box like a spar, and want to reduce
> twisting in the long axis, is it better to lay out the fiberglass mat
> with the fibers aligned at a 45 to the length, or parallel to the
> length?

At 45 degrees.

Oliver