Is Transmet the source? No idea. It's K101 and K102 from Chris at FWC. If Transmet's the source then that's the source. And it's not a "powder", it's clear macroscopic flakes. Uncoated Al will stay shiny bright? In what world? Perhaps one without an oxygen-containing atmosphere. Not earth. Any "bright"/shiny Al is coated with something. Whether it's the coating or not, the K stuff, in my hands is a pia to homogenize into some charcoal star comps. Not surprising that a waxy/stearic acid coating slightly complicates star comp binding, but seems quantity-dependent, which is expected. Still, doesn't dazzle me with its utility.
And yup, it's a really big flake. You're right that stearic acid on such a huge flake is probably not a flame-starting inhibitor because you need a sustained fire to get that huge Al particle lit up. But if it were the coating on smaller flake bright Al, I'd consider it an ignition inhibitor for sure.
I'm hoping the 812 I bought on Mumbles' recommendation is better suited to my needs; I expect so. Then perhaps I'll try to find an ideal use for my K flakes. Likely firepit fodder. Til then, they are backburnered in semi-retirement. Probably a reason it's only $8/pound.
the aluminum I have is from pyrochemsource and it just simply says aluminum flake 18 mesh. It is very shiny. It wasn't actually advertised as Firefly. Do you think it would work in Firefly Stars?
Edited by Uarbor, 11 June 2021 - 08:38 AM.