How come rust built up on iron things looks like a thick crust, but somehow when it's removed it's like there's nothing gone from the original? (lemmy.world)

submitted 1 year ago by Atomdude@lemmy.world to c/asklemmy@lemmy.ml

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[-] Atomdude@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Thank you for your answer. I guess I could've done some more research myself, but I was also interested if I wasn't the only one who wondered about it.
I keep getting these videos on TikTok where someone finds an old axe, completely caked in thick layers of rust, and at the end of their magic you can sometimes even see the stamp of the original maker. Truly baffling.

this post was submitted on 01 Jul 2023

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