18 replies to this topic

[vaslop2005]

embarrassingly, I seem to have found the problem , nothing to do with any of the chemicals purity, but my solvent spray, which I believed to be 33:67 alcohol:water, was infact just IPA alcohol. adding another thing to the 'what not to do to blue stars' list.

I guess that the dissolved red gum, when it coats the perc, burns in a completely different fashion.

Thanks for all your help.

[digger]

Interesting one that. I have not come accross that one before

D

[Mumbles]

I've had stars look different based on the solvent used, but they always preformed fairly similarly. Do you think it might be something along the lines of small air pockets from faster evaporating solvent causing a faster (hotter) burn?

[vaslop2005]

I've had stars look different based on the solvent used, but they always preformed fairly similarly. Do you think it might be something along the lines of small air pockets from faster evaporating solvent causing a faster (hotter) burn?

That could explain it, I didn't notice any drastic changes in speed though. Or maybe the dextrin, when just screened into the comp, would char, into tiny peices of charcoal. As we know, charcoal creates the black body in the flame envelope, and ruins blues. And the even spread throughout the star when it is activated as a binder allows it to burn completely.