The manufacturing process “photo etch” is usually used for very thin products with thickness less than 0.8mm. And another advantage is that the metal lines of photo etched pins can be much thinner than die struck pins and die casted pins.
An image of your design is transferred from a photographic negative onto the surface of the metal. Your design is then etched into thebrass using an acid-reaction process.
All the acids and other impurities are carefully rinsed off. The indentations are then filled with the enamel colors. Colors are inserted by hand, one at a time, using different sized syringes. The sheet of metal is then fired at 450°F for 12 to 15 minutes. Pins are then cut out of the sheet according to your custom design.
Non-colored (raised) sections of the pin are then plated to a shiny gold finish. An optional epoxy protective coating (dome) can then be applied to protect the color enamels from fading or cracking over time.