Here is a closer shot. For a sand casting the finish is pretty good.
Wednesday, June 24, 2015
To cast this I ran the crucible quite full. With the last aluminium ingot floating in the melt, it was about 8 mm to the top. Of course as this melted, and the rest of the melt got hotter, the crucible ended up pretty much brim full - stuff expands when you heat it up - who knew?. That makes for a touchy time pouring it. Spilling liquid aluminium is probably a bad way to end the evening.
It sits on a packed sand base, it has Ceramic wool around it, and the lid is fire cement and perlite.
It's survived a few melts at this point. It has quite a few cracks. But it was free so it's a win.