What is CABOSIL ??

[Baiano, Mike [HCS]]

HI Verne,
 
So does micro-balloon expoxy mixtures have any structural strength? I have
both micro-balloons and cabosil - and I'm never quite sure when I should use
one as opposed to the other. I generally reserve the cabosil when I just
want to thicken epoxy into a paste, and weight isn't a huge issue. How do
you decide which one to use for a particular application?
 
Thanks,
Mike

-----Original Message-----
From: Verne Koester [mailto:verne at twmi.rr.com] 
Sent: Thursday, September 05, 2002 11:41 PM
To: discussion at nsrca.org
Subject: Re: What is CABOSIL ??


Cabosil is fumed silica sand. It's extremely light weight. When mixed with
epoxy finishing resin, it creates a paste that won't run on vertical
surfaces. It's also frequently mixed with epoxy in a thinner mix and brushed
into a mold to create the external gel coat on a glass part which prevents
pinholes from making it to the surface of a part. On a clear epoxy-cloth
piece, the epoxy/cabosil mix can be seen in all the 90-degree corners to
bridge the radius the cloth can't make. It'll show as an opaque white as
opposed to the clear epoxy/cloth you see everywhere else. Down side is that
it's much tougher to sand than micro-balloons and has virtually no
structural strength. Good stuff to have around, though. I use it a lot.
 
Verne
 
 

----- Original Message ----- 
From: Van  <mailto:extra330 at tampabay.rr.com> - E-Mail LIST 
To: Pattern LIST <mailto:discussion at nsrca.org>  
Sent: Thursday, September 05, 2002 8:32 PM
Subject: What is CABOSIL ??

Don't think I know what this is ?
________________________________________________
 
Van Flowers
AMA: 6216 IMAC: 2229 
IMAA: 26019 NSRCA: 2778
www.rc-aerobatics.com <http://www.rc-aerobatics.com> 
 
 
 
 

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