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06-12-2014, 12:25 PM
Thread: How "they" made a razor strop in 1916
by eKretz- Replies
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I'm a machinist and have used crocus. I'm pretty...
I'm a machinist and have used crocus. I'm pretty sure it's just FeO - Ferric Oxide - or rust. It's obviously not just scraped off a bumper, it's finely graded and only very small particles. Not a...
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