Prior art electromagnetic coil technology in tattoo machines employs a round
steel post to alternately repel and attract an armature bar retained by a spring,
reciprocally moving a needle bar and attached needle groupings into and out of
the skin in the act of tattooing. The present invention uses a hexahedron shaped
steel post to increase the surface area contacted on the armature bar, improving
the magnetism and general movement of the bar. The improved rate of movement of
the armature improves the overall functioning of the tattoo machine including the
operator's ability to achieve more solid color, smoother shading, and more consistent
lines. Removable retaining washers and o-rings are employed to allow the operator
to customize and repair the magnetic wire.