Guide · Hard
Hard Enamel Pins Explained: Filled, Ground and Polished Flat
Hard enamel pins are filled above the metal lines, baked, then ground and polished flat. How this differs from soft enamel and when it is worth it.
A hard enamel pin is filled above the top of the metal lines, baked hard, then ground and polished until the enamel and the metal sit on one flat plane. The face is smooth, glossy and level. Plating happens after grinding, not before. It costs more than soft enamel and is the choice when the pin has to look like jewelry.
What "hard" means
Hard enamel is a resin enamel baked at a higher temperature until it can be ground and polished like stone. Once cured it will not dent under a fingernail. The name comes from that cure, not from the metal. The body is the same ZAMAK 3 zinc alloy as any of our cast pins.
How a hard enamel pin is made
- Artwork becomes a mold drawing. Cells and walls are laid out exactly as for soft enamel.
- Steel mold cut. Zinc alloy die-cast into blanks. Deburr and polish.
- Each color is filled by hand or by machine, overfilled above the wall height, and baked. Repeat per color.
- The whole face is ground flat on a wheel until the metal walls reappear as clean lines.
- The face is polished to a gloss.
- The pin is plated. The plating covers the exposed metal lines and the edge.
- Backing, inspection, packing.
Step 4 is the one that defines hard enamel. Grinding removes anything above the wall line, which is why the finished face is level.
Why plating comes last
If the blank were plated first, the grinding wheel would strip the plating off the wall tops. So hard enamel pins are ground first and plated after. This changes two things:
- Plating options are the same list (gold, silver, nickel, black nickel, gunmetal, rose gold, antique gold, antique silver, antique copper, copper, two-tone), but antique finishes look different because there is no recess for the dark tone to sit in.
- Very thin lines can widen slightly during grinding. Fine detail designed for soft enamel may need a small adjustment.
Where hard enamel is the right call
- Corporate and membership pins worn on a suit, where a flat gloss face reads as quality.
- Designs with large color areas and few lines.
- Pins that will be handled or worn daily. The level face collects less dirt.
- Award or recognition programs, where the pin is kept for years.
Corporate buyers can see typical setups on the corporate brands page.
Where soft enamel is better
- Many thin lines or small text. Soft enamel keeps them crisper.
- Antique or vintage look. Recesses are the point.
- Budget-driven runs. Soft enamel skips the grinding and polishing.
Choosing between them
| Your priority | What we'd suggest | Trade-off |
|---|---|---|
| Flat, glossy, jewelry-like face | Hard enamel | Higher cost; longer process |
| Crisp thin lines and small text | Soft enamel | Textured face |
| Flat face but tight budget | Soft enamel with epoxy dome | Dome rounds edges; glossy, not level |
| Daily wear on a lapel | Hard enamel, locking clutch | Cost up on both counts |
| Vintage look | Soft enamel, antique plating | Not available in the same way on hard enamel |
Color and finish notes
- Colors match Pantone Solid Coated. Enamel color after grinding and polishing is slightly deeper than the raw fill, so we match to the finished sample, not the syringe.
- Glitter enamel is possible in hard enamel but the grinding flattens the glitter, so the sparkle is more subtle than in soft enamel.
- Glow-in-the-dark and transparent enamel work in both.
Specifications and finish options are on the hard enamel pins product page.
Order Facts
- From 100 pcs per design · better price at 500+, best at 1,000+
- Free artwork proof within 2 working days
- Sample 10–14 working days · bulk 30–60 days · rush from 10–15 days
- DDP door-to-door available: duties and taxes included in the quote
- Bella replies within 12 hours
Related
Frequently Asked Questions
Is hard enamel the same as cloisonné?
No. Cloisonné uses glass enamel fired at high temperature on a copper base. Our hard enamel is a resin enamel on zinc alloy, ground and polished flat. The look is similar; the material and cost are different. We do not offer true cloisonné.
Can I mix hard enamel and printing on one pin?
Yes. A printed element can be applied in a recessed cell and covered with an epoxy dome, while the rest of the face is hard enamel.
Does hard enamel take longer?
Slightly. The grinding, polishing and post-plating steps add to the production sequence. It still falls inside the 30 to 60 day window by quantity.