Enamel UV Printing or Epoxy Dome Which Decoration Method to Choose

Fired Enamel

Enamel is filled into recesses cast into the piece and fired, so colour sits below the metal ridges that surround it. Those ridges protect the colour, which is why an enamelled pin survives years of lapel wear and a menorah keeps its blue detail. The limitation is that enamel needs a cast boundary for every colour area, so it cannot reproduce gradients, photographs or artwork with soft edges. Senchoy runs 8 dedicated enamelling machines in house, which is why colour is held against an approved master between reorders.

UV Printing

UV printing cures ink directly onto the metal surface, so it reproduces photographs, gradients and fine multi-colour artwork that enamel cannot hold. It sits on the surface rather than in a recess, so it is vulnerable to abrasion and solvents. It is the right choice for mirrors, magnets and flat display faces, and the wrong choice for anything that will be rubbed against keys. We run 3 high-speed UV printing machines in our own plant.

Clear Epoxy Dome

An epoxy dome is a clear resin layer poured over printed artwork. It protects the print from abrasion and slightly magnifies the detail underneath, which is why it is standard on bookmarks, compacts and souvenir magnets that live in a bag. It cannot be used where the surface must stay flat, and solvents will cloud it.

A Quick Decision Rule

If the artwork is a solid-colour logo and the item will be handled constantly, choose fired enamel. If the artwork is photographic or has gradients and the item sits on a surface, choose UV printing. If it is photographic and the item lives in a pocket or handbag, choose UV printing under an epoxy dome. If the mark must never come off under any circumstances, cast or engrave it into the metal and skip colour entirely.