Tattoos are created by injecting ink into the skin by using electric machine gun which creates a similar noise to dentist equipment. The needle was stick to the machine gun and moving up and down around 2,000 times a minute to inject the ink into the skin. The basic components of machine gun are needle, electric motor, tube system and foot pedal. The most important component probably is foot pedal which can control the movement of the needle, similar to the sewing machine.
When you start thinking about having your first tattoo done, Safety should be your first concern. There is always a risk