The coil tattoo machine is a classic in the tattoo industry, known for its buzzing sound and powerful performance. Many professional artists still rely on it for crisp lines and bold outlines. At Certified Tattoo Academy, we teach every student not just how to use a coil machine, but how to understand its mechanics so they can master their craft.

Step 1: Power Supply Connection

The machine is connected to a power supply via a clip cord or RCA cable. This current is the lifeblood of the machine, activating the electromagnetic coils and starting the needle movement.

Step 2: Magnetic Field Activation

Once powered, electricity flows through the copper-wrapped coils. This creates a magnetic field that pulls down the armature bar the part responsible for driving the needle.

Step 3: Needle Movement

As the magnetic field releases, a spring returns the armature bar to its starting position, pulling the needle up. This cycle repeats hundreds of times per second, pushing ink into the skin with precision and speed.

Step 4: Customizing Performance

Artists adjust the contact screw, spring tension, and voltage to fine-tune the machine. A properly tuned coil machine can switch between lining and shading setups with ease.

When to Choose a Coil Machine


  • You want maximum line precision
  • You specialize in bold, traditional >
  • You enjoy the hands-on process of machine tuning

Pro Tip
Many experienced artists keep a coil and a rotary in their toolkit. While the coil delivers unmatched line work, rotaries or pneumatic tattoo machines can handle shading more smoothly.

Quick Reference: Coil Machine Maintenance Checklist


  • Check and adjust contact points regularly
  • Clean after every session
  • Replace worn springs or armature bars as needed
  • Keep coils free of dust and debris

This mix of mechanical strength and custom tuning is what keeps coil tattoo machines relevant, even as wireless options gain popularity. Whether you’re a beginner learning the basics or a pro refining your setup, the coil machine remains a true workhorse in the tattooing world.