Hard Enamel Pin Badge are created in a similar way but instead of keeping the dye below the outline of the design, the enamel dye is added over and over, raising the enamel higher so it's level with the metal edge, to create and show a flat finish. Then heated at a very high temperature to harden and cure the enamel.The hard enamel Pin Badge custom is expensive than Soft Enamel Pin Badge.