well done except for the landings 
The string was probably tied too high with respect to the seat for a good landing.
it's strange to see the line burning more as the top travels...that' a very cool effect
Yes, I agree, that is the coolest thing about it. At first I had the candle at the center and started the fire from there, but then I realized that I should start the fire on my side to get the full effect of the flame chasing the top.
I am not completely sure why the flame does not propagate at the beginning as I submerged the whole string in fuel. I guess it is behaving like a wick and drawing the fuel from the rest of the string. But it is understandable that the top helps the flame propagate as it puts in contact pieces of string separated by the circumference of the tip.
Very impressive! How many times can you reuse the "fire wire" without replacing the line? And more importantly, does your wife know what you're doing with her furniture?
The string lasts quite a few times. All three walks on the video were with the same piece of string. Of course, I make sure I extinguish the flame after a walk. What I think I noticed is that the string started to absorb less fuel, so that is probably what would limit its reuse.
My wife saw it and said nothing: I am more surprised than you!
It seems top spinners would want to get it as thread and then make your own string/cable. Maybe kevlar diabolo string for the walking?
I do have kevlar thread and a regular size top wire walks fine using it. But by itself it takes too little fuel. Perhaps making a top string would work, but on the other hand the string burning has not been a problem.
