How Race Medals Are Made: 7-Step Factory Process from Die-Cast to Packaging

Race medals are not made by one single process. A reliable custom race medal order moves through mold design, zinc alloy die casting, trimming, polishing, plating, coloring, assembly, quality inspection, and packaging. Each step affects the final look, weight, surface finish, delivery time, and bulk consistency. For event buyers, understanding the factory process helps you evaluate whether a supplier can handle your medal design, control production risk, and deliver on schedule. This article explains the 7-step factory process from a manufacturer’s perspective, with practical checkpoints for race directors, brands, and procurement teams.For visual inspiration before finalizing a design brief, review these race medal design ideas to see how shape, plating, ribbon, and special effects can work together.

Race medals are not simply produced after a design is approved. The real delivery quality depends on whether the factory can control the mold, die casting, polishing, plating, coloring, assembly, QC, and packaging steps. For brands and event buyers, understanding these steps helps you evaluate a supplier’s real manufacturing capability.

Key Takeaways:

• Custom race medal production is a connected factory process involving mold design, die casting, polishing, plating, coloring, QC, and packaging.
• Zinc alloy die casting is widely used for race medals because it supports custom shapes, 3D relief, solid weight, and stable bulk production.
• Polishing and plating decide the basic metal finish, while coloring and UV printing decide the visual accuracy of the design.
• Event buyers should not only review finished product photos. They should also understand medal blanks, edge finishing, plating quality, color filling, ribbon assembly, and packaging protection.
• For B2B race medal orders, sample approval, bulk production inspection, and pre-shipment QC are key steps to reduce delivery risk.

How Race Medals Move from Design to Factory Production

Before a race medal enters production, the design must be converted into a manufacturable structure. Medal size, thickness, front and back design, 2D or 3D relief, coloring method, plating finish, ribbon, and packaging all affect the production process.

When we receive a custom race medal project, we do not only check whether the artwork looks good. We first check whether the design can be produced consistently in bulk. For example, a 3.5-inch marathon medal with a city landmark on the front, sponsor logos on the back, a full-color ribbon, and a custom backer card is not just an artwork project. It is a complete production project involving mold structure, die casting, plating, coloring, assembly, and packaging.

Before production starts, these details should be confirmed:

If your project is still in the design stage, you can first review 2D vs 3D race medals to decide whether your medal needs clean flat lines or deeper sculpted relief. The earlier the production structure is confirmed, the lower the risk of later revision.

Step 1 — Mold Design and Engraving

The mold is the foundation of bulk race medal production. The medal outline, logo relief, text, recessed color areas, hanging hole, and 3D structure are all determined by the mold.

In factory production, mold making is not simply “engraving an image.” The design team must convert the flat artwork into a production-ready structure. The mold team then checks which areas need more depth, which lines need to be widened, and which details may be too thin for stable production.

For 2D race medals, the mold focuses on clean lines and clear borders. Logos, text, distance numbers, and geometric graphics must be sharp and readable. For 3D race medals, the process requires 3D modeling, CNC carving, and manual mold refinement to control depth and surface transitions.

In our race medal production experience, 2D line accuracy can reach around ±0.05mm, which is suitable for logos, text, and fine raised lines. 3D sculpted detail accuracy is usually around ±0.1mm, and the relief height is often controlled within about 2–3mm to show visible depth without creating production risk.

Buyers should be careful with small medals. For medals below 2.5 inches, complex 3D relief usually has limited space to perform. For 3-inch medals and larger, 3D relief becomes more practical and visible.For smaller runs with tighter budgets or faster timelines, this 5K medals custom resource explains practical options for simple but memorable finisher awards.

Step 2 — Zinc Alloy Die Casting

Zinc alloy die casting is one of the most common forming methods for race medals, especially for custom shapes, larger sizes, solid weight, and 3D relief designs. In this process, melted zinc alloy is injected into the mold and solidifies under pressure to form the medal blank.

For many custom race medal projects, zinc alloy is the main material because it has good casting performance, supports complex shapes, and creates a smooth surface for later plating, coloring, and finishing. Zinc alloy melts at around 385°C, which makes it suitable for die casting detailed medal structures.

The die-casting process usually includes:

For regular medal production, the factory selects the die-casting machine according to product size and structure. Larger medals or complex shapes require suitable machine tonnage and stable mold venting. If the machine pressure is not enough, the medal may show incomplete corners, unclear details, or missing metal in thin areas.

When evaluating a supplier, buyers can check the medal blanks before polishing. Useful checkpoints include complete shape, clear 3D details, no obvious cracks, no major air holes, no missing metal around the hanging hole, and no severe flow marks on the surface. If the blank quality is poor, polishing and plating cannot fully fix the problem later.

For large marathon medals, you can also review custom marathon medals because marathon medals usually have higher requirements for size, weight, relief depth, and finish consistency.

Step 3 — Trimming, Deburring and Polishing

A die-cast medal blank cannot go directly to plating. After die casting, the blank usually has sprues, burrs, rough edges, flow marks, or uneven areas. These must be removed before surface finishing.

This step affects two important things: whether the medal feels smooth and safe in hand, and whether the plating layer can be applied evenly. Experienced buyers often check the medal edge, hanging hole, back side, and 3D details instead of only looking at the front surface.

The typical finishing process includes:

There is a balance in this step. Insufficient polishing affects the hand feel and plating quality. Over-polishing can soften text, reduce 3D depth, or damage fine details. For example, city skyline relief, mountain textures, and edge lettering can lose sharpness if the polishing pressure is too strong.

For 3D race medals, polishing is not about making every surface extremely shiny. It is about keeping the surface clean while preserving depth and structure. For antique gold, antique silver, and antique copper medals, the contrast between raised and recessed areas must be protected, otherwise the antique effect will become weaker.

Step 4 — Electroplating and Surface Finish

Electroplating is not only about changing the medal color. It affects the metal finish, corrosion resistance, brightness, and detail visibility. Gold, silver, black nickel, antique gold, antique silver, antique copper, matte black, and other finishes all depend on a stable surface treatment process.

Pre-treatment before plating is critical. If polishing wax, oil, dust, or moisture remains on the medal surface, plating defects may appear later, such as bubbles, black spots, flow marks, uneven color, or weak adhesion.

A typical plating process includes:

For drying after plating, a tunnel oven parameter can be around 100°C for about 40 minutes. Acid copper plating time can commonly range from 20 to 60 minutes, depending on product size, surface requirement, and plating effect.

Key plating inspection points include:

Complex 3D medals, cut-out medals, and layered structures have more hidden corners. If cleaning and pre-treatment are not stable, the final batch may show inconsistent color even when the sample looks acceptable.

Step 5 — Coloring: Soft Enamel, Hard Enamel or UV Print

Coloring determines how well the medal design is visually reproduced. Different surface techniques enter the factory process at different points and have different inspection standards.

Soft enamel is one of the most common coloring methods for race medals. Raised metal lines separate recessed color areas, creating a touchable texture. It is suitable for event logos, race icons, distance numbers, and designs with clean color blocks.

Hard enamel requires additional grinding and polishing after coloring. The surface becomes flatter and smoother, making it suitable for projects that need a more refined surface.

UV printing is used when the artwork has many colors, gradients, photos, or dense sponsor logos. It does not fill color into recessed areas. Instead, it prints full-color artwork directly on the medal surface and cures it with UV light. A clear epoxy dome is often added for protection.

For reference, soft enamel baking can be around 160–180°C for 20–30 minutes. UV printing may use industrial UV flatbed printing with 1440dpi output, and the UV curing process is very fast. Epoxy dome thickness is usually about 0.5–1mm to protect the printed layer.

If you are deciding between enamel and printing, read soft enamel vs UV printed race medals for a deeper comparison. The key point in this factory process is simple: do not force a complex gradient artwork into enamel, and do not use UV print when the design needs the tactile effect of raised metal lines.

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Step 6 — Assembly and Quality Control

A race medal is usually not only a metal piece. It may include a ribbon, jump ring, clasp, spinner part, magnet, bottle opener function, backer card, or gift packaging. Assembly and QC decide whether the bulk order matches the confirmed sample.

For B2B orders, the key is not whether one sample looks good. The real question is whether the factory can keep 500 pcs, 1,000 pcs, 5,000 pcs, or more medals consistent.

Common assembly and QC checkpoints include:

Badge Artisans follows a 3-stage QC approach: structure inspection at the blank stage, finish inspection at the plating and coloring stage, and final inspection after assembly and packing. The goal is to deliver race medals that can be used directly for event distribution without requiring the buyer to re-sort the goods.

Buyers should pay attention to this point: if a supplier only shows a sample but cannot explain bulk inspection, packaging checks, or pre-shipment QC, the delivery risk is higher. Common bulk issues include color difference, wrong ribbon direction, scratched packaging, quantity shortage, and individual plating defects.Now that you have seen the full manufacturing process — mold engraving, zinc alloy die-casting at 385°C, plating, enamel coloring, ribbon assembly, and QC — the next step is choosing which production method fits your event. Our running medals page walks through all four methods (sticker, UV print, die-cast enamel, interlocking series) with per-unit pricing for each. See running medals custom.

Step 7 — Packaging and Shipping Preparation

Packaging is not a small final step. For race medal orders, packaging affects shipping protection, arrival condition, event distribution efficiency, and brand presentation. If medals need to be handed out quickly at the event site, clear and practical packaging becomes even more important.

Common packaging options include polybag, OPP bag, velvet pouch, paper box, velvet box, acrylic box, blister box, and custom backer card. Different packaging options fit different event needs.

After packaging is confirmed, the factory also needs to check carton marks, outer carton protection, quantity counting, and shipping method. Air freight is suitable for urgent race dates and can be as fast as 3–5 days. Sea freight is suitable for larger orders with more planning time, but buyers should reserve at least 30+ days.

Bulk production usually takes 7–15 days, depending on design and order complexity. If a pre-production sample is required, sample production usually takes 7–10 days. For international orders, sample confirmation is often done by photos or videos before bulk production because this is more efficient. If a physical sample must be shipped, the total project timeline will be longer.

Buyer’s tip: do not wait until production is nearly finished to confirm packaging. Packaging affects carton size, volumetric weight, freight cost, and event distribution method, so it should be confirmed during the artwork or sample stage.

Factory Process Checklist for Event Buyers

If you are a brand buyer, race director, or procurement team evaluating a race medal manufacturer, the checklist below can help you review the factory process more clearly. Finished product photos are useful, but process control tells you whether the supplier can deliver consistently.

For event buyers, the purpose of reviewing the factory process is not to become a production engineer. It is to identify delivery risk. A capable race medal manufacturer should be able to explain what happens at each step, what equipment is used, what defects are checked, and how problems are corrected before shipment.

If you are planning a complete race medal project, you can review our custom race medals page for event types, size references, and common technique options, then use this factory process guide to evaluate production capability.

Frequently Asked Questions

If you still have any questions, please feel free to contact us.