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Infrared radiation. While thin sheet metal may not be able to stop a propagating flame for long, it will do a damn fine job of blocking radiating heat from melting the fuel lines...Why, if you have an exposed filler pipe for the fuel, do you have to cover it?[/b]
Try taking a thinnest piece of sheet metal and putting it in front of your face while you stand next to a campfire and you'll see what I mean.
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Infrared radiation. While thin sheet metal may not be able to stop a propagating flame for long, it will do a damn fine job of blocking radiating heat from melting the fuel lines...
Try taking a thinnest piece of sheet metal and putting it in front of your face while you stand next to a campfire and you'll see what I mean. [/b]
So in essence, your saying two layers of sheet metal or other materials are what they want for addition safety? Why would they want to use a material such as plastic which would only contribute as an additional fuel for the fire?
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