I realize that enough heat on anything is going to produce incineration.

However, I also took the time to hold the torch quite away from the felt and move into the felt. Thus, low temp to high temp.

I didn't spend much time trying to hold the felt, the torch and the thermometer - only two hands available. Wife actually didn't help. She won't hold things I am burning, drilling or soldering.

I don't have any temps to report. Other than within seconds the melted felt and resulting hanging glob was at about 130° within a few seconds of the torch going out.

Actually it really should be up to corproate (bge) to resolve this.

On to the heat...

Fire is caused by three things, air, fuel and heat.

Carbon monoxide is a gas which is produced by non used fuel (lack of oxygen). Any type of fuel can produce carbon monoxide. Additionally, the fire plume carries carbon monoxide.

Carbon Monoxide flashover - nope, I think not.

Flashover is where there is a lack of oxygen with some ignition point (glowing embers - lump in our case) and a gas mixture (heavy with carbon monoxide - due to ladk of oxygen) and intense heat (for us thats inside the egg).

It is known that flashback occurs at 930°F. Introduction of oxygen to the existing non burining mixture (opening the dome) is the clasic definition of flashback.

Burping the egg is a method of introducing oxygen into the egg with the hopes of controled flashback(s).

The better solution as several times stated by TNW is to open wide bottom vent and top vent or remove top vent entirely.

It would seem the latter method would allow the mixture inside the egg to have oxygen, ignite, probably producing a fire plume out the top vent. Once the mixture inside the egg is actually bruning it would seem there would be no potential of flashover/flashback would not occure when opening the dome. However, the intense heat possibly would still be inside the egg.

Therefore, if flashover happens at 930°, what is the temp once flashback occurs - most likely higher. If the dome opens & flashback occures that 930° or higher temp going over the gaskets that fire plume might be melting the felt/adhesvie.

It appears we would need to know two factors. The actual falure point of the felt & adhesive and also the temp of the flashback fire plume.