In this video tutorial, Daniel Yuck dives into the details of needle dept on human skin. Not only does he show a close up look, but also demonstrates what it sounds like when the needle hits the dermis. Equipment he used in this tutorial was the CNC WE Plus and Quelle 10-11RL.

Oh No! Is My Tattoo Ink Spoiled?
Can Tattoo Ink Go Bad? Many people don’t realize that the ink used in tattoos can go bad. The ink is created by mixing pigments