Message-ID: <001b01beb5b3$80f70b80$4ced85c6@2thman>
From: "Barrett/Burns" <2thman@olympus.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: Peel Ply
Date: Sun, 13 Jun 1999 08:42:41 -0700
Mime-Version: 1.0

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Dear James,

Interesting comments about peel ply.  I'm no expert about this stuff and, in
fact, managed to bond in the firewall stiffening ribs with peel ply on one
side.  That happened becuase, like you, I couldn't tell if there was really
peel ply on this prepreg panel.  I should have known because it did have the
black stripes, but none of the other panels with my kit had that, so after
fooling with it for awhile, I decided to just use it as is.  Then, later
when I used the rest of the panel for the rear seat, I started trying to
peel the stuff again, and, Lo and behold, I got a corner started.

The next painful step was to remove the bid tapes from the side of the three
ribs with peel ply in place and then to redo the step after the peel ply was
taken off.  I was really surprised that removing these bid tapes was very
difficult.  In one or two places, the bond was so strong that it actually
pulled up the surface of the 3 layer per side prepreg panel.

At one time I couldn't tell the difference between a two layer panel I had
and a three layer panel.  I called the factory and asked Don Goetz.  He
suggested burning a corner.  The layers would separate and you could
identify them that way.  Perhaps the same technique could be used to start
removing/identify peel ply.

John Barrett


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