micro-balloons etc

[Jerry Stebbins]

Tom, sounds like cabosil. Too dry is bad, since it will break/crack easily.
Has very little strength on it's own. That is why we add a piece of carbon
tow along with it where needed. Resin we use is similar to yours, so would
guess that is not a problem. If you are looking for bulk the balloons would
be lighter,either glass or phenolic.If you are looking for a fillet
material, we use a 2 part epoxy mix that is blue/greenish, called Super Fil.
We also use it to glue on belly pans, and fill joints on glass fuses. Get it
from Aircraft Spruce and Specialties.
Jerry
----- Original Message -----
From: "Koenig, Tom" <Tom.Koenig at actewagl.com.au>
To: "'Discussion'" <discussion at nsrca.org>
Sent: Sunday, May 18, 2003 7:40 PM
Subject: micro-balloons etc


>
> Help.....please
>
> Gray, Matt, Lance.... anyone.
>
> I have a huge tub at home that is a white fluffy powder, which weighs
> nothing...( Nooooo....not that sort of powder<VBG>) I dont know wether it
is
> micro balloons or cabosil, or whatever.
> When I mix it with epoxy it sort of forms the white stuff which you
commonly
> see in the corners of layups ( to help lay the glass), but it isnt quite
the
> same, it seems to be more translucent.
> Am I not mixing properly? It seems that when I keep adding more powder it
> becomes too dry and unworkable. It also doesn't seem that light which
makes
> me think it isnt micro balloons. Is it the resin I'm using ( LC 3600)?
>
> Sorry for the moronic question...but how can I tell what I've got? Also
what
> exactly is used as the fillers in the ZN kits, Bollys etc ? Do they use a
> thixotropic additive in the resin when they form the fillets etc.
>
> Thanks guys
>
> Tom
>
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