Message-ID: <20010105183021.19133.qmail@web3306.mail.yahoo.com>
Date: Fri, 5 Jan 2001 10:30:21 -0800 (PST)
From: Tammy and Mike Salzman <arrow54t@yahoo.com>
Reply-To: n811es@pacbell.net
Reply-To: lancair.list@olsusa.com
Subject: re:scales and balances
To: LIST LANCAIR <lancair.list@olsusa.com>
Mime-Version: 1.0

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I talked with Jeffco today and found out that
they recommend mixing at 22:100 by weight or 1:4
by volume.  They said that the epoxy can be mixed
in the range of 18 to 28 :100 by weight and still
have the rated performance.  If you get out of
the range rated performance is not guaranteed.
Too much hardener, it will be soft.  Too much
resin, it will be brittle.

My sticky stuff dispenser has stamped on its
label plate "26:100 by volume".  Jeffco said that
is fine too.  What surprised me was that they
said I could use a mixing cup with marks on the
side for volume, like you can get at paint
stores, and put in 1/4 hardener and 3/4 resin
(25:100 by volume) and that would work too.  Now
it seems to me that there would be a lot of error
possible that way.  It seems to me that Jeffco is
not too concerned about getting the ratio exactly
on some specific value.  I am not a chemist, so I
don't know what to think.  All I can do is trust
that the sticky stuff dispenser will do its job
and mix it right.  I sure paid enough for it.  It
sounds like it is split about 50-50 between who
use the dispenser and who use the scales.

What about the hysol?  I take it that we have to
use a scale for this since it is to be mixed at
"100:44.5 A to B by weight".  Does anyone have
any suggestions on mixing this stuff?  The
thickness could be an issue when a lot needs to
be mixed in a hurry like when closing a wing.  I
hope to close out my first wing in February.

=====
LNCE N811ES 5%
arrow54t@yahoo.com

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