Zumber Posted April 17 Posted April 17 25 minutes ago, Norsepyro said: I have some 19mm crossettes which I use to ignite in the cavity end. It makes an impressive little glittering gerb. I'll see if I can get a video of one soon and post here. Gum arabic like boric acid does have quite an effect on the burning properties and delay for aluminium glitters. For higher metal content and larger delay formulae it may be too much and make the formulae fail to glitter. I use gum arabic in powder form just like dextrin when pumping stars. The stars become rock hard, much harder than dextrin. Some have mentioned that gum arabic is slightly hygroscopic so it might not be ideal in humid climates. However the Maltese use this binder in some effects from what I have heard so I don't think it can be that bad. I may try to place some stars outdoors in humid weather for some days to see the effect. The bicarb may also absorb some moisture from humid air. Sure please post footage if you get it. I don't make pump stars much, I love to roll stars. Let's wait for more experienced replies on gum arabic as a binder in non black powder type. Thank you for discussion on this thread.
Norsepyro Posted April 18 Posted April 18 Here is a video of the fish glitter with the earlier delay techniques I mentined. It is a 19mm crossette cavity comet, ignited in the cavity end so the effect is a small gerb. A nice little garden friendly display 🙂 VID_20250418_222427.mp4 2
Carbon796 Posted April 20 Posted April 20 On 4/17/2025 at 7:54 AM, Zumber said: I only will prefer gum arabic as a binder only for black powder as it's solution tends to become acidic after time , also it don't readily dissolve in water for that you may need warm or hot water. Considering above situations, glitters are water sensitive it also cause reaction to happen due to nature of chemicals used ( metals/oxalate/nitrates and so on) in it, gum arabic might creat problem so I would go for dextrin as I often love to roll the stars than pump. If you have a video footage for the formula mentioned above it would be highly appreciated 👍 The only issue with Gum Arabic becoming acidic. Would be with a chlorate comp. Glitter's are water sensitive in the fact, that. Too much water can destroy or alter, the glitter effect. Not that they will heat up. That is why most glitters are preferred to be pumped. To help preserve the effect.
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