Bluing a gun is a time-honored tradition that enhances its appearance and protects the metal from rust and corrosion. This process involves applying a chemical solution that reacts with the steel to create a dark, protective oxide layer. While various methods exist, bluing liquid remains a popular choice for both professionals and home gunsmiths. This guide delves into the world of gun bluing liquid, covering different types, application techniques, safety precautions, and factors to consider for optimal results.
Understanding Gun Bluing Liquid
Gun bluing liquid, also known as cold bluing, is a chemical solution containing various compounds, typically including nitrates, dichromates, and other chemicals. These interact with the iron in the steel to form a layer of iron oxide (rust), but in a controlled manner resulting in a consistent, aesthetically pleasing, and protective finish. Unlike hot bluing, which involves heating the metal to high temperatures, cold bluing is performed at room temperature, making it a more accessible option for hobbyists.
Types of Bluing Liquid
The market offers several types of gun bluing liquids, each with its own characteristics and advantages:
- Traditional Cold Bluing: This is the most common type, usually containing a combination of chemicals as mentioned above. It's known for its relatively easy application and affordability. However, it generally produces a less durable finish than hot bluing.
- Fast Bluing: Designed for speed, these formulations typically require less time for the bluing process to complete. This can be advantageous for those seeking quicker results, but the finish may be slightly less robust.
- Oxidation Bluing: This approach relies on the natural oxidation of the metal, often aided by the chemicals in the bluing solution. It's a more subtle process resulting in a less intense blue than traditional methods.
Applying Bluing Liquid: A Step-by-Step Guide
Applying bluing liquid requires precision and patience to achieve a consistent and even finish. Before starting, ensure you have a well-ventilated area and all necessary safety equipment.
1. Preparation is Key: Thoroughly clean and degrease the gun's metal surface to remove any oils, grease, or dirt. Use a suitable solvent and fine abrasive if necessary. This ensures proper adhesion of the bluing solution.
2. Application: Apply the bluing liquid evenly to the prepared metal surface according to the manufacturer's instructions. This might involve using a cotton swab, brush, or other applicator. Avoid excessive amounts to prevent runs or uneven coloring.
3. Reaction Time: Allow the bluing solution to react with the metal for the recommended time. This can vary depending on the specific product used. Carefully monitor the process and follow the manufacturer's guidelines.
4. Neutralization and Drying: Once the desired color is achieved, neutralize the remaining bluing solution and thoroughly rinse the gun with clean water. Allow the metal to dry completely before handling.
5. Final Touches: After drying, you might need to apply a protective coating, such as oil or wax, to enhance the bluing's durability and prevent premature wear.
Safety Precautions: Handling Bluing Liquid Responsibly
Bluing liquid contains chemicals that can be harmful if mishandled. Always follow these safety guidelines:
- Ventilation: Work in a well-ventilated area to avoid inhaling fumes.
- Gloves and Eye Protection: Wear appropriate protective gloves and eye protection to prevent skin and eye irritation.
- Avoid Contact: Prevent contact with skin and eyes. In case of contact, immediately flush with water and seek medical advice if necessary.
- Disposal: Dispose of the used bluing liquid and any related materials responsibly according to local regulations.
Factors Affecting the Bluing Process
Several factors can influence the final result of your bluing project:
- Metal Type: The type of steel significantly affects how the bluing solution reacts. Different steels may require different techniques or solutions.
- Surface Preparation: Thorough surface preparation is paramount for achieving a consistent and even finish.
- Application Technique: The method of application and the amount of bluing liquid used will impact the final color and durability.
- Temperature and Humidity: Ambient temperature and humidity can influence the bluing process.
Conclusion: Maintaining Your Blued Gun
Bluing your gun with liquid bluing offers a rewarding experience and enhances the firearm's aesthetic appeal and protection. By carefully following the instructions, practicing safe handling, and understanding the factors influencing the process, you can achieve excellent results. Remember that maintaining a blued firearm involves regular cleaning and oiling to preserve the finish and prevent corrosion. Consult professional gunsmiths for more advanced techniques or if you encounter any difficulties.
