I am armature in the pyrotechnics.
started to make some star in small batches less than 80 gms (enough for 2/3 inch shell).
list of metallic powder currently i am using are
1. Manganalium (200 mesh)
2. Aluminum powder (200 mesh & 325 mesh - Spherical)
3. Aluminum powder (flake - grade MEPCO 666,333,999).
i have read in many topics about the incompatible mix of Nitrates and Aluminum powders.
when ever i am making stars composition only having the Al powder + other stuffs, i am adding 1% - 2% Boric acid to stabilize the formula.
But, currently i need to make some color stars which i need to mix MgAl and AL.
i am afraid of ignition of composition due to non-compatible properties(presence of Al) .
does adding boric acid solve my issue also here ?. or Boric acid will have reverse reaction with MgAl making it unstable ?.
if i need to roll my stars is that will be a problem ?, where i am using 75/25 water/IPA
Any safety tips i needed for storage of finished shell.
Better safe rather than sorry.
Critic/answers/advises/thoughts most welcome.....
Edited by deepakpyro, 16 February 2021 - 12:05 PM.