Hi everyone,
A few years ago I tried to melt aluminium using an old steel fire extinguisher as crucible. This was done in a homemade foundry using coke as fuel.
Me having no patience, I tried getting the temperature up as fast as possible and a hole was melted in the crucible, producing a very bright light.
Could the molten aluminum have reacted with the rusty steel fire extinguisher to produce thermite?


He said at the end steel goes white hot when it melts, probably that?
Yeah it has to have been that