The Aluminum powder that you got from the paint shop sold you
a bunch of metal sawdust. It's completely contaminated with urethane
I had a go at doing a thermite reaction just about 45minutes ago.
Some of the particles are in fact magnetic.:can:
Hmm.... Suddenly getting some of that Westsystem 420 Al doesn't sound that bad.
Can't trust vendors here to know what they are selling I guess.
On a more positive note the Fe2O3 seems to be fairly pure.