HELP: glassing experiment

[Gray E Fowler]

That tissue is in reality call a surfacing veil. It has one purpose in 
life and it is not to put on wings. It really very little on no strength. 
The idea is to place that stuff on a mold surface and since it is random 
it allows the resin to retain cohesive strength, creating the same effect 
as a gel coat, giving a 3 mil resin rich surface.  The pits of weave are 
due to the lack of resin cohesive strength. Is the veil lighter? Tell us 
when you make it.



Gray Fowler
Principal Chemical Engineer
Composites Engineering




s.vannostrand at kodak.com
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11/12/2002 04:04 PM
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From: Lance VanNostrand

I'm glassing some wings.  Normally I do this with the traditional 3/4 oz
glass cloth.  I just purchased a roll of 0.5 oz carbon tissue to 
experiment
with.  My hope is that the use of tissue will eliminate the weave and
simplify the process.  I expected 0.5 oz carbon tissue to also be lighter
than 0.75 oz glass cloth but after examining the tissue, I'm not so sure
anymore.  It has the "feel" of cheap toilet paper.  In other words, it has
some thickness and toughness.  It is light, as expected, as dry cloth, but
I'm concerned that it will absorb more epoxy resin than the glass cloth 
and
be heavier in the end.

Does anyone have experience with using carbon fiber or glass tissue on
airplanes?  I may have to make some test panels if no one can help.

Thanks,
--Lance



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