I am sure that all three sources move enough CF that expiration is not a
problem, but perhaps the commercial grade dousn't have the coating to begin
with.  I need to call Wicks tomorrow anyway so I will ask what the
difference is since they sell both.

Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com

-----Original Message-----
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of Wood, Sidney M.
Sent: Monday, May 24, 2004 8:18 AM
To: KRnet
Subject: RE: KR> carbon fiber


Brian,
Most fibers used for laminating, including E and S glass and carbon fiber,
have a coating applied to the individual strands to enhance the adhesion of
whatever resin system would be used to glue everything together.  That
coating has a 5-year shelf life.  My thought is if the shelf life is getting
ready to expire, then the dealer would reduce the price to move that batch
before it expired.  The resin will not wet out old fiber very well - been
there, done that.  Your results may vary.
Sid Wood, KR-2 N6242
Mechanicsville, MD
sidney.w...@titan.com


 -----Original Message-----
I was looking online yesterday for good prices on carbon fiber and found
this site.  http://www.advancedcompositetraders.com/inven.html  They have
style 282 cloth for $12.50 a yard.  I checked in my last years Aircraft
Spruce catalog and they had 282 cloth for $25.75 a yard.  This years catalog
has it for $16.50 a yard.  This seemed strange so I looked in Wicks and they
have 282 cloth listed at $28.20 a yard and they also have a C282 commercial
grade cloth for $17.19 a yard.

I am assuming that the online source and ACS, at least this year, carry the
commercial grade.  Would anyone happen to know what the difference is?
Seems that the commercial grade is 5.8 oz and the other is 5.7.

I know that the commercial grade is stronger and lighter than glass so I am
assuming that for a KR that there is realy no reason to go with the other
type that is over twice the cost.

Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com




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