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Carbon Felt vs Fiberglass Insulation

Since I've been using carbon felt/fiber in my burners I've been getting lots of people asking my why I use expensive carbon felt/fiber instead of cheaper fiberglass insulation. In this video I try to explain why I use carbon felt/fiber. I couldn't find much on the melting point of fiberglass except something I found in one engineering book where it said that the high temp range was 1000°F (540°C). When you figure that temperatures of alcohol burners are anywhere from 1112-1652°F (600-900°C) the burners I've made should be able to melt fiberglass. Least ways in my burners it did melt the fiberglass after a couple of uses. Then I had to turn over or replace the fiberglass. Here is the info on carbon felt/fiber and where I buy it: CyberWeld Tillman Welding Blanket - Thermofelt 615 Code: 615B http://store.cyberweld.com/panfelwelb... Info borrowed from CyberWeld site: Tillman Welding Blanket - Thermofelt 615 Soft, thick, affordable welding blanket provides protection up to 3000F. 16 oz. Black Thermofelt material is non-flammable, non-melting, non-shrinking and scratch free! No heat transfer takes place between the blanket and the protected surface, making it ideal for auto body and other thin sheet metal surfaces. With a working temperature of 1800F, this blanket is a safety must for the auto body mechanic or the home hobbyist. It is available in 2 sizes, either 3' X 3' or 6' X 6'. Hope this helps to explain why, And as always thanks for watching my videos, Hiram