Mailing List flyrotary@lancaironline.net Message #5266
From: Bill Schertz <Wschertz@ispwest.com>
Subject: shaping ducts
Date: Tue, 13 Jan 2004 12:15:03 -0800
To: <flyrotary@lancaironline.net>
Rusty
you wrote:
Thanks Dave. To make the radiator ducts, I was actually thinking of doing this. I figure I can wrap the core in plastic, tape the mouth of a kitchen garbage bad around the inlet side of the core, open a hole in the bottom of the bag, then fill it with foam. My thought is that this will leave me with a nice ball of foam to be shaped. Can anyone think of a better approach?

Thanks,
Rusty (I sure won't use expanding foam from the spray cans again)

You can actually just tape some cardboard that is as tall as the max distance to the opening around the edges of the cores after you have wrapped them with plastic, pour in the foam material and let it expand. Your duct is always going to be smaller than the core as you move away from the core. the pour foam is MUCH easier to sand and shape than blue or pink or white styrofoam.


Bill Schertz
KIS Cruiser # 4045
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