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Date: Thu, 24 May 2007 22:46:45 -0500
From: David Staten <Dastaten@earthlink.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: intake tubing
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Joe Berki wrote:

>This is interesting. I was told from a composite expert that one could
>fashion the shape of a complex manifold using sections of hotwired blue foam
>initially appearing as a blue foam pipe.  The pipe is cut into setions and
>glued together and sanded to shape.  The whole thing is coated with silcone
>seal and layed up with glass.  disolve the foam with solvent and pull out
>the silicone with pliers.  It is supposed to leave a smooth surface.  I Have
>never done this but it could work.
>
>Joe Berki
>Limo EZ
>

There is water soluble, bakeable mold material out there you can get for 
not a lot of $$$.. You form it by hand. Dry it. Bake it. then make your 
layups around it. then wash the mold out down the sink. no solvents. 
Just water. I am looking in my email archives for the brand name.

Dave