Methods and Strategies: Crafting Blue Fire (Do-It-Yourself Fire Bluing)
In the world of firearm enthusiasts and craftsmen, fire bluing remains a cherished technique that dates back to the 16th century. This ancient method of finishing carbon steel parts is still widely used today, not only for its aesthetic appeal but also for its corrosion-resistant properties.
David Stavlo, from Lodgewood Mfg., suggests a simple yet effective method to prevent rust on parts treated with oil. After applying oil, he recommends dropping the parts in used motor oil for a few minutes. This process helps to create a protective barrier against rust.
The process of fire bluing involves heating carbon steel between 590°F and 640°F. As the parts heat up, they change color, first to a very light yellow, then a deep purple, and finally a beautiful blue. The oxide layer that forms during this process allows light to pass through, reflecting off both surfaces and creating the distinctive blue color known as 'peacock' blue.
Before fire bluing, it's essential to polish the parts using fine emery cloth to at least 600 grit. The more reflective the finish after polishing, the deeper and more lustrous the resulting blue color will be. Once the desired color is achieved, quenching the part in water 'locks in' the color and prevents the temperature from rising further.
In recent years, fire-blued parts have become a common sight among firearm enthusiasts and knife owners who undertake the process at home. Small metal components, such as screws, can also be fire-blued. However, specific examples or product details from the last few years involving home treatment are not explicitly mentioned in the search results.
Fire bluing can be found on some high-end custom arms today, adding a touch of class and authenticity. This timeless finish continues to captivate artisans and enthusiasts alike, offering a glimpse into the past while providing a practical solution for modern-day needs.
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