Full-Color UV Printed Challenge Coins Deliver High-Impact Color Resolution UV printing has transformed the possibilities of challenge coin manufacturing. Unlike traditional soft enamel, which cannot apply color to raised 3D surfaces, UV printing allows vibrant full-color graphics to be printed directly onto both recessed and raised areas. It also overcomes the limitations of conventional plating. Traditional metal finishing is generally restricted to one or two plating effects and comes with many design constraints. With UV printing, those restrictions are greatly reduced, allowing full-color artwork to be combined with a wide variety of plating finishes for virtually unlimited design flexibility. Even better, automated UV printing replaces much of the manual color-filling process, reducing production costs while improving consistency and shortening lead times.