Quote:
Originally Posted by slopemeno
Sign shops (and locally, Tap Plastics) carry sign vinyl in all the primary colors. You can get it in various "mils" of thickness. You can gently heat it witha heat gun and shrink it once its on to take out wrinkles.
If I was tackling your project, I'd go for a wider, narrower slit in the lower opening. Fewer turns means less energy is put into moving the air around corners.
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First off, if I heated it and shrunk it, isn't there a chance it would CREATE wrinkles due to it being so tight? What about losing elasticity of the sticky stuff due to it always pulling on it?
Also, what do you mean by "fewer turns means less energy is put into moving the air around the corners" ??? Why would making awider narrower slit matter?