In traditional manufacturing, a single aluminum component is typically restricted to a single color. If a designer wants a dual-tone effect, it usually requires multiple parts and complex assembly.

COBOGGI defies this limitation through Multi-Color Oxidation Protocols, allowing for distinct, high-contrast color zones on a single, monolithic piece of aluminum.

The Precision of Selective Anodizing

Creating multiple colors on one substrate is a high-stakes electrochemical dance. It requires perfect timing and absolute chemical isolation to prevent "bleeding" or "smudging" between color boundaries.

1. Advanced Masking Techniques

The foundation of multi-color oxidation is the barrier. We utilize high-precision UV-curable resins or custom-fitted physical masks to shield specific areas of the 6xxx or 5xxx series aluminum during the first anodizing cycle.

These masks must withstand the acidic environment of the electrolyte bath without lifting or degrading, ensuring a razor-sharp "shut-off line" between colors.

2. Sequential Dyeing and Re-Anodizing

Once the first color is locked into the oxide layer and sealed, the mask is removed. The part then undergoes a secondary surface preparation—often involving localized etching or laser stripping—to expose the raw aluminum in the previously masked areas. This "fresh" metal is then anodized and dyed a second time. Because the first color is already sealed, it remains unaffected by the second chemical bath.

3. Laser-Assisted Secondary Oxidation

For complex logos or functional markings, COBOGGI employs laser-assisted stripping. A high-precision fiber laser removes the primary anodic layer with micron-level accuracy.

The part is then re-processed to create a contrasting color or a "bright" metallic highlight within the etched area, providing a permanent, wear-resistant branding solution that is flush with the surface.

Conclusion: Beyond the Mono-Tone

Multi-color oxidation transforms a simple structural component into a sophisticated branding asset.

By eliminating the need for separate parts to achieve color variety, COBOGGI reduces assembly complexity while offering designers a wider palette of CMF (Color, Material, Finish) possibilities.