I've made aircraft radomes out of extremely high quality fibreglass. You
couldn't see through .05" of the stuff.

Amen!




"DSK" wrote in message
.. .
Bob Crantz wrote:
That light coming through depends on the woven material. Fibreglass matt
is usually white, so it reflects all light.

That's the wax holding it together.

.... The reason light gets through is because the weave has gaps in it.
The reason there are gaps is that the glass isn't laid up properly, it is
stretched beyond specification.


Maybe, maybe not. The ratings on fiberglass cloth tell how long the
component strands are.... longer is better of course... cheap cloth or
roving, such as used for auto-body repairs, will be made up of a lot of
short strands spun into yarn to make up the weave, but it's not as strong
as the same weight of cloth with more continuous strand.

Very interesting stuff, I'm learning.

DSK