Here's my response that I have ready..
Crxess I'd like to make sense of what happened here. I have been using rayon since 2013 and never experienced any disappearing wick, or docomposition.
Please think about this for a second..
Leaves and thin wood curls and shows a movement when burned as well as does paper if its cut into a similar shape.. Some of what you see contracting is due to the crimp in the fiber. Its not a straight fiber. Eeither way it makes no implication of it being unsafe.
What you describe crxess would only occur only if the wick chamber actually dried out and the wick completely dried and then the coil glowed lighting the remaining
juice on fire and burned up the wick.
Rayon is a fairly light substance free of non-cellulose contaminates, like protiens in cotton, so the ash of rayon is very light and airy. One of its noticeable properties in a burn test is that its ash will wisp away in the air its so light. It probably will not even be noticeable when wet in
eliquid as the ash will reabsorb liquid.
What i think happened; you did have combustion... it fired till completely dry, the
tank did not/was not feedibg liquid at this time. After the rayon dried out completely - it burned to its natural, very light weight, light colored ash.. After it burned and the outward pressure of the heat/flame was completed; then a flood of liquid probably ran into the chamber as the pressure changed dramatically. Causing the flood.
"No ignition, No Dried out chamber, NO wicks in sight - at all. i.e. (edited - Decomposed) - Below Flash point. <*no soot in chamber or on base*>"
You mentioned how very hot it was. It was not in your hands while it was firing, so you don't know if the chamber was dry or not.. I assume-
You did have Ignition.
Your chamber was dry, when you weren't looking; and above the flash point.
There was no soot because... The rayon really is that much more pure than cotton. It is not sooty. Its a very clean burn, just from the lack of protein contaminates alone.
Obviously no one would be vaping it anywhere close to that point. In normal use the coil will dry burn first and you will stop vaping it...
It could also happen with a loose wick when fired enough to glow the coil the juice itself will ignite.
My last rayon wick and coil went 180ml with no wick change and no dryburning to clean coil. Just vaping. And no coil gunk. 180ml at 6v and the wick was still good.
So while you did burn it away, it wasn't in a normal vaping condition. Since rayon will run its entire self dry to the coil, it is different than cotton which holds liquid in its fiber like a sponge. Starving the coils and only burning away in the coil when the coil glows... Your tails are still wet, showing the weaker wick to coil of cotton.
So that's very likely what happened, no need to really spread misinformation around the forum about it melting..
).
