How are enamel pins made？

The journey begins with a detailed design. A designer usually provides vector artwork (such as AI, SVG, or EPS files) that features bold outlines and clear color separations. Thin lines, gradients, or overly complex details are avoided since pins are small and need to maintain clarity.

During this stage, decisions about size, shape, metal outline, and color palette are finalized. A strong design ensures that the custom pins will look sharp whether it’s a half-inch accessory or a larger commemorative piece.

Once the artwork is approved, the factory creates a three-dimensional mold. This mold is carved using precision equipment, often CNC engraving machines, to capture every line and contour of the design. The 3D model essentially serves as the blueprint for pressing metal blanks later in the process.

Depending on the complexity of the design, mold creation may take several hours to several days.

After the mold is complete, raw metal sheets—commonly copper, iron, or zinc alloy—are placed into a high-pressure stamping machine. The mold presses the artwork into the sheet, producing raised and recessed areas that define the pin’s shape and outline.

The excess metal is trimmed away, leaving behind a “blank” pin. At this point, the piece has its general shape but requires further refinement.

Freshly pressed blanks often have sharp edges and uneven surfaces. To smooth them, the pins are ground and placed into a vibratory polishing machine. The process eliminates burrs and rough edges, preparing the surface for plating and coloring.

This step ensures that the pin feels smooth to the touch and won’t snag fabric when worn.

Before finishing, pin attachments such as butterfly clutches, safety pins, or magnets are added to the back. While some manufacturers use industrial adhesive, higher-quality pins rely on soldering or welding to secure the attachments. Strong attachment methods ensure durability, especially for pins that will be worn frequently.

Polishing brings out the shine of the metal before plating and coloring. Workers use buffing wheels to make the surface even and reflective. A polished surface is crucial for achieving a high-quality finish once plating is applied.

Electroplating coats the pin with a metallic finish, such as gold, silver, nickel, or antique bronze. The plating process immerses the pins in a bath of chemicals and runs an electrical current that adheres the plating to the surface of the pin.

The choice of plating can make a big difference in the appearance and feel of your pin. Bright finishes provide a crisp, modern look, while antique finishes provide depth and an older feel.

Coloring is one of the most delicate steps. There are 2 main ways to do this.

Soft Enamel – The liquid enamel is pushed into the blanks in the recessed areas, and you can see the raised metal lines of the stamping process. The colours will harden after baking, but the surface will still be somewhat grainy. These pins are relatively cheap and feel nice and tactile.

Hard Enamel – Several layers of enamel are pushed into the blanks in the recessed areas until the metal is even with the raised metal lines of the stamping process. Then the pins are polished smooth, resulting in a flat surface. Hard enamel pins are more expensive, but are scratch-resistant and have a nicer finish. Coloring is done by hand, using small syringes or droppers. Each colour needs to be applied separately and needs to be cured individually.

For hydraulic stamping presses, CNC engraving machines, electroplating tanks, and more, the machinery is specialized and expensive.

Electroplating involves chemicals that need to be handled carefully, ventilated, and disposed of properly. Even the temperatures used for enamel curing are dangerous to use outside of a factory. 

Enamel pin details require accurate pressure, temperature, and timing to create. Even a slight offset while plating or coloring can ruin a batch.

Mold making alone may range from tens to hundreds of dollars. For minimal production, the cost per unit explodes when it is being done haphazardly versus professional manufacturing.

GSJJ has experienced professionals with knowledge in polishing, plating, and tinting. Without decades of practice, it is practically impossible to achieve a professional finish.

While it's possible to make homemade alternatives using shrink plastic or resin, the projects don't have the same professional quality, luster, or durability as genuine custom enamel pins.