A YouTuber’s latest 3D printer project includes a real tattoo gun and a large clamp to keep your skin in place.

The tattoo culture caught his eye ... the affected skin can become inflamed. Christofano’s machine design features a reworked armature bar, a component that helps stabilize and control ...

"Never met a tougher one," the tattoo artist captioned an Instagram photo of the rapper's heavily inked new design Machine Gun Kelly is expanding his tattoo collection with a significant addition.