A tattoo machine is the tool that allows an artist to embed a tattoo on a client. An integral part of a professional tattoo apprenticeship is learning the components of, and how to tune, a tattoo machine. Each artist finds and performs different settings for their personal machine, allowing the artist to feel comfortable using the machine. The type of skin the client has, along with the size or type of tattoo, determines the setting of the machine and the power supply.
Plug in the power supply and attach the cord to the tattoo machine. Place the tube in the tattoo machine and insert the needle in the tube. Tap the foot pedal to ensure the machine is working.
Adjust the springs on the tattoo machine to control the depth. Apply pressure with the hand that holds the machine, pressing down into the skin for more depth after adjusting the springs.
Turn the voltage of the power supply up to adjust the speed. The more voltage, or higher setting, of the power supply equals a quicker speed. A lower speed is optimal for tattooing bony areas of the body and high speeds for fleshy parts.