this post was submitted on 21 Nov 2024
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Microblog Memes

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[–] [email protected] 4 points 6 hours ago (1 children)

The opposite of that is kinda how I thought tattoo machines worked as a kid- as in with hollow needles and an ink cartridge, like fountain pens, and each poke into the skin would deposit ink that way. I even 'figured out' that the tiny vacuum from pulling the needle out would be what pulled the ink down into the skin.

When I found out how tattoo machines actually worked, it seemed so messy (and loud!).

[–] [email protected] 4 points 5 hours ago (2 children)
[–] nepenthes 2 points 46 minutes ago

I looked it up:

Tattoo needles are more like the nib of a fountain pen than a syringe; the ink isn’t shot down through the needle, but suspended at the end of it when an artist dips the tool into a well. Then, when the tip of the needle pierces a hole in the recipient’s skin (both the epidermis and the dermis beneath it), capillary action—the same force that makes liquid creep up the sides of a straw—draws the ink down into the dermis.

Source: https://www.popsci.com/how-tattoos-work/

[–] [email protected] 4 points 5 hours ago

IKR? But yeah, nah, tattoo machines are basically a motor that pumps the needle up and down, and you have to dip it in ink to transfer it into the skin.