I use the foundry at my local high schools metal shop as i went there as a kid and the same teacher is still there. I find this is the best way for me because he has a lot of forms for casting all ready made and a lot of the other machines "metal lathe. drill presses, metal ban saws ext. are all there to finish projects. nothing more gratifying than picking up a tool for a job and knowing you made it with your own hands. As far as using scrap metal i think you would have to refine it somewhat to get more of a "pure metal" for a lot of byproducts can compromise the integrity of the metal. I was buying ingots to make my tools so have not tested using scrap but i just might try it now that it has been brought to my attention . i love foundry work and would love to "buy" a real furnace for a consistent heat that can be easily maintained as opposed to a homemade furnace but don't let me disscourage anybody in making there own and would love to hear results of homemade furnaces. remember liquid metal is nothing to play around with and all saftey precautions should be taken i have seen foundry accidents and it is no joke!
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