How to Flame Blue Small Gun Parts for a Beautiful Finish | MidwayUSA Gunsmithing

Published on August 17, 2011
Duration: 1:03

This video demonstrates the flame blueing process for small firearm parts, specifically screws for a Winchester Model 12. It covers essential preparation steps like peening and polishing, the heating process to achieve specific colors (yellow at 400°F, blue at 600°F), and immediate quenching in oil. The technique allows for decorative finishes and can be repeated if the initial result is unsatisfactory.

Quick Summary

Flame blueing small gun parts requires heating them to approximately 600°F to achieve a blue color, progressing through yellow at 400°F. Proper preparation involves peening and polishing, and immediate quenching in oil sets the finish. Unsatisfactory results can be corrected by re-polishing and re-heating.

Chapters

  1. 00:00Introduction to Flame Blueing
  2. 00:12Part Preparation: Peening & Polishing
  3. 00:24Tools and Materials Needed
  4. 00:34The Heating Process & Color Changes
  5. 00:44Quenching and Final Result

Frequently Asked Questions

What temperature is needed to achieve a blue finish when flame blueing gun parts?

To achieve a desirable blue finish when flame blueing gun parts, the metal needs to reach approximately 600 degrees Fahrenheit. The process involves heating the part until it transitions through colors like straw and brown before reaching the target blue.

What are the essential steps for preparing gun parts before flame blueing?

Before flame blueing, prepare gun parts by peening any displaced metal, refiling the slot if necessary, and polishing the surface thoroughly with various grits of abrasive cloth to achieve a high shine.

What tools are required for the flame blueing process?

Essential tools for flame blueing include a propane torch for heating, locking forceps to securely hold the small parts, and oil for quenching the finished piece to set the blue color.

Can a flame blued finish be corrected if it's not satisfactory?

Yes, if the flame blueing result is not satisfactory, the part can be polished again to remove the existing finish and then re-flamed. This allows for adjustments to achieve the desired color and appearance.

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