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Seth Robinson of Robinson Foundry attempted to create a perfect casting of an internal structure in this video.
He first used a seashell to make a sand mold and then poured melted aluminum into the shell. Watch the video above to see all the steps Robinson took and how the project turned out.
Take a look at the Robinson Foundry YouTube page to see more of their videos.
Source: https://twistedsifter.com/videos/trying-to-make-a-perfect-internal-casting-of-a-seashell/
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