Looks like the one treated is much more rigid
It's actually extremely fragile but that fact it is still there is amazing. The other just went up with the smoke.
> In the case of a thick candle it might be less important, but in the case of a thin one, say less than an inch, it might substantially change the way the candle behaves/burns.
That's a whole new issue and drip-less candles are more magic than science.
The diameter of the candle must be larger than the melt pool and that depends on the burn rate of the wick and the melting temp of the candle wax and a million other variables.
I have never succeeded in making a drip-less candle that didn't drown in its own melt pool eventually.
>Can you try them for much longer, like half an hour? A minute is barely enough to get pas the initial stage of the burning.
At 6" for one minute that would require a wick 15 ft long and I don't see what it would prove. In the real world, wicks burn in candles.