18 replies to this topic

[crystal palace fireworks]

I've tried to make them, but obviously I haven't got the paper tubes right - they burn from layer to layer through to the center without spinning. Probably they need the centrifugal force of spinning to throw the fire outward and not ignite the next turn from the side.

Just an idea, but is it not possible to use a sodium silicate solution brushed on the inner and side edges of the paper tube to stop the burn through - in effect this would allow the outside exposed part of the casing to burn away freely?

[Deano 1]

I've got a bottle of that so I'll give that a bash. I think I need to speed my comp up a bit to keep the momentum.

[crystal palace fireworks]

I've got a bottle of that so I'll give that a bash. I think I need to speed my comp up a bit to keep the momentum.

Other than the variables with comps to slow or speed up the burn rate, another possible experiment is to partially line the length of paper tube with different tapes or fireproof bandage to act as a barrier!

Edited by crystal palace fireworks, 31 October 2010 - 12:36 AM.

[phildunford]

It's a fine balance, the end of the tube must burn away, but the side must not! Not even the old makers always got it right!