Chrome Finishing Technology
Two proven systems. One uncompromising standard. Understand the science behind the mirror.
Beyond Traditional Chrome
For decades, achieving a true mirror chrome finish meant one thing: electroplating. Submerging parts in chemical baths, depositing chromium through electrical current. Effective, but limited—only conductive materials, strict size constraints, significant environmental impact.
Cosmichrome® changed everything. Using advanced silver nitrate deposition chemistry, we can now apply genuine metallic mirror finishes to virtually any substrate—3D prints, foam, wood, fiberglass, plastics—without the limitations of traditional plating.
The result? The same liquid-mirror reflectivity you'd expect from chrome plating, applied with spray technology that opens up entirely new possibilities for props, displays, and creative applications.
Cosmichrome® Spray System
True Silver. True Mirror. Any Surface.
How It Works
Cosmichrome® is not chrome paint—it's actual metallic silver deposited at the molecular level. The process uses a precisely calibrated dual-nozzle spray system to simultaneously apply a silver nitrate solution and a reducing agent. When these two solutions meet on the prepared surface, an instantaneous chemical reaction occurs, depositing pure metallic silver in a mirror-smooth layer.
This reaction—known as the Tollens' reaction in chemistry—creates a genuine metal coating with the reflective properties of polished silver. The result is optically identical to traditional chrome plating, with reflectivity exceeding 95%.
The Process
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01
Surface Preparation
Substrate is sanded to 1200-grit minimum, primed with high-build basecoat, and wet-sanded to optical smoothness.
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02
Sensitizing
Surface is chemically sensitized to ensure proper silver adhesion and uniform deposition.
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03
Silver Deposition
Dual-component spray applies silver nitrate and reducer simultaneously. Metallic silver forms instantly on contact.
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04
Rinse & Dry
Excess chemistry is rinsed away, revealing the pure mirror silver layer beneath.
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05
Protective Topcoat
UV-resistant clearcoat seals and protects the silver. Can be tinted for gold, copper, or custom chrome effects.
Matthew's Paint Conventional Systems
Proven Performance. Professional Results.
The Industry Workhorse
Matthew's Paint has been the go-to choice for prop shops and production facilities for years. Their chrome-effect paint systems deliver consistent, professional-grade metallic finishes that stand up to the demands of production environments.
While not a true metallic deposition like Cosmichrome®, Matthew's paint systems use advanced metallic flake technology suspended in high-quality automotive-grade binders. The result is a highly reflective chrome-like finish that offers excellent durability and handling characteristics.
When to Choose Matthew's
Production Multiples
When you need 10, 20, or 50 identical pieces, Matthew's efficiency and consistency make it the economical choice.
Handled Props
Props that will be touched, worn, or handled extensively benefit from Matthew's superior abrasion resistance.
Budget Considerations
For projects where the mirror-perfect finish of Cosmichrome® isn't critical, Matthew's delivers excellent value.
Tight Timelines
Faster application and cure times make Matthew's ideal when deadlines are aggressive.
Traditional Plating vs. Cosmichrome®
Understanding the differences helps you choose the right finishing technology for your specific application.
| Feature | Traditional Electroplating Tank Chrome | Cosmichrome® Spray Silver |
|---|---|---|
| Reflectivity | >95% mirror finish | >95% mirror finish |
| Substrate Materials | Conductive metals only | Any material with proper prep |
| Size Limitations | Limited by plating tank dimensions | Spray application, any size |
| Weight Added | Significant on large pieces | <1 oz per sq ft |
| Abrasion Resistance | Industrial-grade durability | Display/aesthetic grade |
| Chemical Resistance | Industrial environments | Protected by topcoat |
| Color Options | Chrome, nickel, copper | Tintable to any color |
| Turnaround Time | Typically 2-4 weeks | Typically 3-7 days |
| Environmental Impact | Hexavalent chromium, heavy metals | Silver-based, water rinse |
| Cost (Small Items) | Minimum batch fees apply | No minimums |
| Cost (Large Items) | Often prohibitive | Linear scaling |
| Best For | Industrial parts, high-wear functional components, corrosive environments | Props, displays, art, automotive show pieces, any aesthetic application |
Choose Traditional Plating When:
- Parts will experience continuous mechanical wear
- Exposure to harsh chemicals or solvents
- Industrial/functional applications
- Extreme temperature environments
Choose Cosmichrome® When:
- Working with non-metal substrates
- Visual perfection is the priority
- Weight is a concern
- Custom colors or effects needed
- Tight timeline requirements
- Large or oversized pieces
Technology FAQ
Is Cosmichrome® real metal or just paint?
Cosmichrome® deposits real metallic silver onto your substrate. It's not paint containing metallic flakes—it's actual silver molecules bonded to the surface through a chemical reaction. This is why it achieves true mirror reflectivity indistinguishable from polished metal.
Will Cosmichrome® tarnish like silver?
The silver layer is sealed with a UV-resistant protective topcoat that prevents oxidation and tarnishing. With proper care, Cosmichrome® finishes maintain their mirror quality for years. Avoid abrasive cleaners and harsh chemicals.
Can I chrome a 3D printed part?
Absolutely—this is one of Cosmichrome®'s greatest strengths. We regularly chrome FDM prints (PLA, ABS, PETG) and resin prints. The key is proper surface preparation: prints must be sanded to 1200-grit and primed to eliminate layer lines before chroming.
What's the largest piece you can chrome?
There's no theoretical size limit with spray application. We've chromed everything from jewelry to full motorcycle fairings to large architectural elements. If it fits in our spray booth and can be properly prepped, we can chrome it.
How durable is the finish for cosplay?
For cosplay worn at conventions, Cosmichrome® holds up well with reasonable care. It's designed for display and light handling. For armor pieces that will see heavy use, impacts, or flexing, we may recommend Matthew's Paint or a hybrid approach.
Can you do colors other than silver?
Yes! While the base deposition is silver, we can apply tinted topcoats to achieve gold, copper, rose gold, black chrome, and custom colors. The tint sits over the mirror silver, creating a unique depth effect you can't achieve with standard metallic paints.
What's the difference between your chrome and "chrome vinyl"?
Chrome vinyl wraps use metallized plastic film. While useful for certain applications, vinyl cannot conform to complex 3D shapes, shows seams, and lacks the depth and reflectivity of true metallic finishes. Cosmichrome® is applied as a liquid, conforming perfectly to any geometry.
Why do you require 1200-grit prep?
Chrome is unforgiving—every surface imperfection transfers directly to the mirror finish. At 1200-grit, scratches become optically invisible under the chrome layer. Anything coarser and you'll see sanding marks in the final finish. This standard ensures every piece meets our quality threshold.
Ready to See the Difference?
Let's discuss your project and determine the ideal finishing technology for your specific needs.