Recently I posted a video about the history of tattoos. It was excellent and I learned a lot, but now I want to know how the process itself works. I found this video from people at the YouTube channel Smarter Every Day. They show how the tattoo machine (not a gun) works, discuss the process and then it gets really cool. They recorded a tattoo machine close-up and in slow motion so you can see what is happening to the skin.

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