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I went digging around for Scully-related patents and accidentally came across this lathe designed specifically to cut precision parallel grooves like in roulette records... patented in 1986 by Mattel? Yes, the toy company.
This would be intriguing to see in action. https://www.google.com/patents/US4597700
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"The cow says, moo!"
It would be fun to gather all of those old toys.
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