GermanPyro Posted April 11, 2018 Share Posted April 11, 2018 (edited) Hello Pyros, here a vid from my last firework, the shells at 0:20 contains willow & gold strobe stars with a high amount of charcoal, bound without dextrin.The rolled stars have a maximum drying time of 24 Hours, the solvent is plain alcohol. And in this video, the shells from the beginnig up to 1:32 contains also only charcoal stars, bound without dextrin. GreetingsStefan Edited April 11, 2018 by GermanPyro 1 Link to comment Share on other sites More sharing options...
pyrokid Posted April 12, 2018 Share Posted April 12, 2018 What is the binder? PVB? 1 Link to comment Share on other sites More sharing options...
GermanPyro Posted April 12, 2018 Author Share Posted April 12, 2018 Yes, 2,5% PVB. Works perfect instead of dextrin 1 Link to comment Share on other sites More sharing options...
pyrokid Posted April 13, 2018 Share Posted April 13, 2018 I hope you can answer a few questions about your experiences with PVB. I'm quite interested in trying it. 1) Do you see any change in burn rate with PVB instead of dextrin?2) Have you experimented with any cross linking of the PVB for stronger binding?3) Have you observed any oscillatory burning characteristics in compositions bound by PVB?4) What type of PVB is it that you use? Thank you Link to comment Share on other sites More sharing options...
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