The quality of the aluminum when remelted and recast may be a surprise for you, and maybe not a pleasant surprise. Without controlled atmosphere, and so forth, extra alloys are often added to sand castings which help the flux and flow of the metal.
The nice stuff we typically use for cnc machining is electrodeposited, I believe, but I could be mistaken. This is why power stations are built for aluminum smelters.
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(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |