Metal Melting

So far melting of metal in the kiln has included lead, and these two:

Top ingot is aluminium from scrap. Bottom ingot is brass from old electrical fittings.  I've machined the tops off to see what the quality of metal is below the surface. The lead casting is just to reduce the space the scrap takes, I've no idea what to use it for at the moment.


Under the microscope the aluminium has some inclusions, but it's still pretty good, easily good enough for things I want to make form it.

The brass is better, with no inclusions visible. It pours well too.