Soft Enamel vs Hard Enamel Pins: A Production Guide for Creators

01

Key Takeaways

Before the detail, these are the decisions that matter most when specifying soft enamel vs hard enamel.

• Soft enamel pins feature recessed color fill below raised metal borders, creating a tactile, dimensional surface.
• Hard enamel pins undergo grinding and polishing after baking, resulting in a perfectly flat, smooth finish where color is flush with the metal lines.
• Plating occurs after the baking cycle for soft enamel pins, but must be completed before the color fill and baking steps for hard enamel pins.
• Epoxy resin coatings can be applied over soft enamel pins to protect the recessed colors and simulate a smoother surface, but are not used on hard enamel pins.
• Artwork with extremely fine details or tight color separations generally performs better as soft enamel, because the raised metal borders prevent colors from bleeding together.

02

Physical Differences in Surface Texture

Run your thumb across a soft enamel pin and you will feel the ridges. The metal borders stamped into the base mold sit higher than the colored enamel filling the recessed cavities. This creates a textured surface where the raised metal lines frame each color pocket. Light catches these elevated edges, giving the design a dimensional look that emphasizes every outline in your artwork.

Hard enamel pins feel completely smooth. During production, the color fill is built up until it sits level with the top of the metal mold lines. Once cured, the entire face is ground down and polished flat. There are no ridges to catch your fingernail. The result is a uniform, glass-like surface where the metal borders and the enamel colors share the exact same plane.

This physical distinction matters when you handle the final product at a convention table. A custom soft enamel pin offers tactile contrast between the metal and the color wells. Hard enamel provides a sleek, uninterrupted surface. Both start from the same stamped metal base, but the depth of the color fill relative to those raised borders dictates whether your finished piece feels textured or flat.

03

The Metal Mold and Stamping Process

Every enamel pin begins as a custom metal mold. A CNC machine carves your artwork into a block of steel, creating a negative impression of the final design. This tooling step defines every line, cavity, and border on the pin before any color is applied. The mold acts as a stamp that shapes raw metal sheets under high pressure.

During the stamping phase, a press strikes a sheet of base metal—typically iron, brass, or copper—against the carved mold. The force pushes the metal into the recessed areas of the tool, forming deep cavities separated by raised borders. These raised lines are what keep individual colors from bleeding into one another during the fill stage. Both soft and hard enamel pins share this exact starting structure.

The depth of these stamped cavities matters for the rest of the enamel pin manufacturing process. Deeper recesses hold more enamel paste, which affects how the surface feels once the pin is finished. After stamping, the excess metal around the outer edge is trimmed away, leaving only the shaped pin body ready for plating or color injection.

04

Color Fill and Baking Cycles

After the metal mold is stamped, workers inject enamel paste into the recessed cavities. This step defines the color fill for your design. For soft enamel pins, the paste sits below the top edge of the raised metal borders. The pin then enters a baking cycle where heat cures the material in place. Because the enamel shrinks slightly as it cools, the metal lines remain visibly higher than the colored sections.

Hard enamel requires a different approach during this stage of the enamel pin manufacturing process. Instead of leaving the cavities partially empty, workers overfill them with enamel paste. The excess material rises above the metal borders before the pin goes through its own baking cycle. This high-temperature curing hardens the paste completely. The goal is to leave enough cured material on the surface so it can be ground flat later without exposing the underlying metal.

05

Plating Sequence and Timing

Electroplating applies your chosen metal finish to the pin. The timing of this step depends entirely on whether you order soft or hard enamel. For a custom soft enamel pin, electroplating happens after the metal mold is stamped but before any color fill enters the recessed cavities. The raw base metal receives its gold, silver, nickel, or black nickel coating first. Once the plating cures, workers inject the enamel paste into the stamped wells.

Hard enamel reverses this sequence. The color fill goes into the bare, unplated metal cavities first. The pin then passes through multiple baking cycles to cure and harden the enamel completely. Only after the final bake does the pin undergo electroplating. This order is mandatory because the subsequent grinding and polishing steps would strip away any pre-applied metal coating. Plating last ensures the finish survives mechanical abrasion.

This difference in the plating sequence directly affects which metal finishes you can specify. Soft enamel accommodates a wider range of electroplating options, including antique washes and dyed black metal, because the plated surface never faces grinding wheels. Hard enamel limits your choices to standard platings that bond reliably after high-heat curing. If your artwork requires a specific custom metal tone, verify compatibility with the manufacturing process before confirming your order.

06

Grinding and Hard Enamel Polishing

Hard enamel pins require a mechanical finishing step that soft enamel pins skip entirely. After the baking cycle cures the color fill, the enamel sits slightly above the raised metal borders of the mold. To achieve the flat surface characteristic of hard enamel, the pin face must be ground down until the metal lines and the colored cavities sit at the exact same height.

This grinding process uses abrasive belts or stones to remove the excess material evenly across the entire pin face. The machine operator controls the pressure to avoid cutting into the metal borders or leaving uneven patches in the color fill. Once the surface is level, a finer polishing step smooths out any scratches left by the initial grinding pass.

The result is a completely flush, glass-like surface where your finger cannot feel the transition between metal and enamel. This polishing stage adds time to the overall production sequence but gives hard enamel its distinct weight and reflective finish. You can see this smooth texture applied on our custom enamel lapel pin or compare it against the recessed look of a custom soft enamel pin.

07

Epoxy Coatings for Soft Enamel

Soft enamel pins leave the metal borders raised above the recessed color fill. If you want to protect those exposed ridges from scratching during convention wear, you can request a soft enamel epoxy coating. This involves applying a clear layer of epoxy resin over the entire face of the pin after the enamel cures.

The resin fills the gaps between the raised metal lines and hardens into a smooth dome. Visually, this eliminates the textured feel of a standard soft enamel pin. The surface becomes flush and glossy, similar to how hard enamel looks before polishing. It also adds a slight magnification effect to the colors underneath the clear layer.

Hard enamel pins do not receive an epoxy dome. Because the manufacturing process already grinds and polishes the enamel flush with the metal borders, adding resin on top would defeat the purpose of the flat finish. Epoxy is strictly an optional upgrade for soft enamel orders.

When deciding whether to add this coating, consider how your customers will handle the pin. If you are selling a custom soft enamel pin meant for daily wear on a bag or jacket, the epoxy resin provides a barrier against friction. For display pieces where texture matters more than durability, leaving the metal borders exposed preserves the traditional soft enamel feel.

08

Matching Your Artwork to the Right Finish

Your line art dictates which enamel type will reproduce your design accurately. Soft enamel requires metal borders thick enough to hold the liquid color paste inside each cavity during injection. If your artwork relies on thin, intricate linework or tightly clustered details, those raised metal walls need physical space to exist without merging together. Hard enamel handles finer details better because the grinding process levels everything flat, preventing narrow metal ridges from warping or breaking under pressure.

Color count also influences your choice. Both methods use individual cavities for each color, but hard enamel demands that every section be filled completely before baking and polishing. Designs with dozens of small color areas increase the risk of colors bleeding into adjacent cells during the fill stage. Soft enamel leaves room below the metal lines, making it more forgiving when you have a high number of distinct shades packed into a small surface area.

Consider how your pin will be used at conventions or sold through your online store. If you want a smooth, jewelry-like surface that sits flush against fabric, hard enamel delivers that finish. If you prefer visible texture where light catches the recessed color wells and raised metal edges, soft enamel provides that contrast. You can review our custom soft enamel pins or custom enamel lapel pins to see how these structural differences translate to finished products.

09

Cost and Lead Time Comparison

The custom enamel pin cost depends heavily on how many manual steps your order requires. Soft enamel pins skip the grinding and polishing stages entirely, which reduces labor hours on the factory floor. Hard enamel demands additional machine time to level the surface flush with the metal borders after baking. Each extra color fill in either process adds to material usage and handling. If you request an epoxy resin dome over a soft enamel design, that introduces another curing step. The size of your metal mold also dictates raw material consumption, meaning larger pins carry higher base costs regardless of the finish you select.

Enamel pin lead time follows the same production logic. Because hard enamel requires mechanical grinding and multiple polishing passes to achieve a flat surface, it takes longer to move through the manufacturing line than a comparable soft enamel order. A standard soft enamel run moves from stamping to color fill, baking, and plating without those intermediate finishing cycles. Adding an epoxy coating to soft enamel extends the timeline further, as the resin needs dedicated curing time before packaging. Complex artwork with thin metal borders or high color counts slows down both processes, since technicians must inject smaller cavities carefully to prevent colors from bleeding into adjacent sections.

When planning a convention release or retail drop, factor these variables into your schedule early. Requesting a quote for a custom soft enamel pin or a custom enamel lapel pin allows you to compare exact timelines based on your specific artwork files. Provide your final vector art, specify your preferred plating color, and confirm whether you need epoxy or bare metal finishes. Supplying complete details at the quoting stage prevents revisions that delay tooling and push back your delivery date.