Creator & Manufacturer Guide

Custom Enamel Pin & Metal Badge Vectorization Guide

Manufacturing custom enamel pins, challenge coins, and metal keychains requires vector artwork engineered to physical metal casting and die-strike specifications. Unlike digital artwork, enamel pin factories physically carve steel molds using CNC engravers directly from vector path nodes.

1. Anatomy of an Enamel Pin Vector File

Every enamel pin design consists of two physical layers generated from vector geometry:

• Raised Metal Outlines (Stroke/Lines): The die-struck metal ridge that holds liquid colored enamel in place. Minimum recommended line thickness is typically 0.2mm to 0.3mm (approx. 0.6pt to 1.0pt) to ensure the mold steel doesn't crack.
• Recessed Color Fills (Enamel Wells): Closed geometric vector polygons filled with liquid soft or hard enamel color. Minimum recommended fill area is 0.3mm to allow enamel dispensing needles to seat properly.

2. Soft Enamel vs. Hard Enamel Vector Requirements

3. Common Vectorization Pitfalls in Pin Making

• Gradients and Soft Blends: Physical enamel cannot blend colors smoothly without silkscreening or offset printing over metal. Vectorization must quantize gradients into distinct, flat Pantone-compatible color zones.
• Open Path Breaks: A line that terminates without touching another metal border creates a leak where enamel pours into adjacent cavities.
• Micro-Details: Details smaller than 0.2mm often fill with metal or vanish entirely during electroplating. High-precision vector tracing simplifies and sharpens these tight corners.

4. Why Manufacturers Request DXF, EPS & SVG

Pin mold manufacturers in Shenzhen, Taiwan, and the USA feed vector geometry directly into CNC die-sinking machines. DXF provides exact coordinate toolpaths, while EPS and SVG provide color fill callouts and plating visual proofs.