Hi Pat: I believe it is the nature of the beast with nylon. However, if it will tighten as it dries, heat and sunlight, when the water based poly cures itMessage 1 of 2 , Sep 7, 2009View Source
I believe it is the nature of the beast with nylon. However, if it will tighten as it dries, heat and sunlight, when the water based poly cures it should stabilize. You might try going here, http://www.yostwerks.com/WoodSOFMain.html to research your covering material. At that website they have information on a variety of covering materials and may have more first hand information on the use of nylon as a covering.
Hope this helps:
--- On Mon, 9/7/09, petroglyph@... <petroglyph@...> wrote:
From: petroglyph@... <petroglyph@...>
Subject: [Airolite_Boats] Baggy Skin
Date: Monday, September 7, 2009, 12:16 PM
I've moved into the covering stage of my modified Snowshoe 12. I am using 8.9 oz nylon (over slightly heavier ribs & stringers than in the Monfort plans) and varnishing with water-based urethane.
The skin was tight and sounded like a drum when I started. Every time I put another coat of varnish on, though, it loosens up again, with some sagging or puckering between stringers here and there. If I put the boat into the sun, or warm it with a blow dryer, it'll flatten out.
Is this just the nature of the beast? I'm not too happy with it.