Hello
Bige610
If it's getting really hot and no flames,, theres pretty much no reason why it wouldn't burst into flames..
The only thing I can think of is that you aren't squuezing the bundle tight enough to the burning char, so there is very little contact between the char and the jute....
Another possibility,, but not likely is that your jute was damp...
That's about the Only things I can think of..
Keep at it,, it will work..
ttyle
Eric
O/ST