Tattoo machine

A tattoo machine (colloquially referred to as a tattoo gun) is a hand-held device generally used to create a tattoo, a permanent marking of the skin with indelible ink. Modern tattoo machines use electromagnetic coils to move an armature bar up and down. Connected to the armature bar is a barred needle grouping that opens the skin for the ink to flow into. All electromagnetic coil machines are powered by a wired regulated DC power supplies which send an electric current through the copper coils wrapped around opposing magnets and then moves the armature bar up and down. In addition to coil tattoo machines, there are also rotary tattoo machines, which are operated with regulated rotary motors and are powered by a wired external RC power supply or a wireless battery pack attached to the machine. There are many types of rotary machines, some that look similar to coil machines and some that look more like "pens". Coil machines are usually each tuned for a single function, such as for shading, or lining or packing ink. Rotary machines are multifunctional, taking any size or type of needle or cartridge needle. "The basic machine is pretty much unchanged today, in recent years variations of the theme have crept into the market, namely Manfred Kohrs' rotary machine of 1978 or Carson Hill’s pneumatic machine that uses compressed air rather than electricity, but the principle is essentially the same."^[1]