First try at melting metal

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I made a particle separator when I was in Jr. High using a shop vac and some PVC pipe and we used a sliding gate. It worked to the point that we were able to confidently separate some pretty closely weighted objects. I don't remember what we got down to but I was amazed at how well it worked. We stole the idea from the place that my dad worked that used big fancy versions for separating paint chips from a plastic blasting media.