How to Make a New Firing Pin from Drill Rod | MidwayUSA Gunsmithing

Published on April 30, 2009
Duration: 1:31

This video demonstrates how to fabricate a replacement firing pin from drill rod using a lathe. It covers squaring the rod, turning major and minor diameters, shaping the tip and rear notch, and heat treating for durability. The process highlights essential gunsmithing techniques for repairing or maintaining firearms with custom parts.

Quick Summary

To make a firing pin from drill rod, first square the rod and turn the major diameter on a lathe. Use layout dye to mark the shoulder and tip locations, then turn those diameters. Cut off the pin and hand-file to shape, including the notch for the retaining screw. Finally, heat treat the tip and rear end to a dull red and quench in oil for durability.

Chapters

  1. 00:00Introduction: Broken Firing Pin Problem
  2. 00:19Machining the Firing Pin Blank
  3. 00:48Shaping and Finishing the Pin
  4. 01:03Heat Treating for Durability
  5. 01:14Finished Firing Pin Showcase

Frequently Asked Questions

What material is recommended for making a custom firing pin?

Drill rod is a suitable material for fabricating custom firing pins. It is machinable and can be effectively heat-treated to provide the necessary hardness and durability for reliable firearm operation.

How do you ensure accurate dimensions when making a firing pin?

Accurate dimensions are achieved by using a lathe and precise measuring tools. Applying layout dye, such as Dykem Steel Blue, to the drill rod allows for clear marking of shoulder and tip locations before turning.

What is the purpose of heat treating a firing pin?

Heat treating a firing pin, typically by heating the tip and rear end to a dull red and quenching in oil, hardens the metal. This process significantly increases the pin's resistance to wear and prevents premature breakage during use.

Can a firing pin be made without specialized tools?

While this video uses a lathe for precision, basic shaping of the firing pin's profile and notch can be done with hand tools like hacksaws and files after initial material preparation. However, achieving precise dimensions and proper heat treatment often requires specialized equipment.

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