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Date: Thu, 14 Oct 2004 22:00:23 -0400
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Subject: Re: [LML] Re: Making a Mold
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From: "John Schroeder" <jschroeder@perigee.net>
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Chris -

I had a bottle of PVA on the shelf that came with the Glasair that I  
started and then sold. Recently, we have had/decided to make molds for  
some parts of the Lancair ES we are building. Just about everything we  
tried ended with the total destruction of the mold.

Yesterday, we wanted to build a couple of boxes for the batteries and were  
using the metal jacket that came with a similar battery. Destroying this  
mold would be very hard to do so I decided to paint a couple of coats of  
PVA on the metal.  the 2 BID shell released like it had been greased. We  
did the second one and got  the same results. It beats wax, tape and tape,  
and gelcoat.

Cheers,

John


On Thu, 14 Oct 2004 10:52:11 -0400, Christopher Zavatson  
<Christopher.Zavatson@udlp.com> wrote:


<My point is that the bond is not mechanical (i.e. there are bubbles
> that get filled mechanically holding it) but is in fact chemical.>>
> Unless I missed it, I haven't seen anyone mention PVA.