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Quick Tip: The Harrison Design 1911 Frame Fixture

Brownells, Inc.
Published on April 9, 2018
Category: Gunsmithing & DIY
Duration: 2:36

This quick tip demonstrates the Harrison Design 1911 Frame Fixture, designed by Ted Yost. The fixture uses a sine bar technique to expand and securely hold a 1911 frame within the magazine well without tools. It features relief cuts for the magazine catch and ejector, making it suitable for both assembled and stripped frames. The tool allows for easy manipulation of the frame for gunsmithing tasks like sanding or filing, and releases with a simple tap.

Tags

Harrison Design
1911 Frame Fixture
Ted Yost
Gunsmithing Tool
1911 Build
Magazine Well Fixture
Sine Bar Mechanism
Frame Work
Custom 1911
Brownells Tool

Quick Summary

The Harrison Design 1911 Frame Fixture, designed by Ted Yost, utilizes a sine bar mechanism for secure, tool-less installation in the magazine well. Pushing a rod upwards expands the fixture, while tapping the opposite end releases it. It features relief cuts for the magazine catch and ejector, making it versatile for various 1911 frame configurations.

Chapters

  1. 00:00Introduction to Harrison Design 1911 Frame Fixture
  2. 00:11Sine Bar Mechanism Explained
  3. 00:30Fixture Installation and Tightening
  4. 00:41Tool-less Release Mechanism
  5. 00:48Design Features: Mag Catch & Ejector Relief
  6. 01:00Using Fixture in a Completed Frame
  7. 01:26Using Fixture in a Stripped Frame
  8. 01:41Securing Frame in a Vise for Work
  9. 01:54Removing the Fixture
  10. 02:00Conclusion and Tool Benefits

Frequently Asked Questions

How does the Harrison Design 1911 Frame Fixture work?

The Harrison Design 1911 Frame Fixture uses a sine bar mechanism. By pushing a rod upwards within the magazine well, inclined surfaces cause the fixture to expand and tighten securely, holding the frame in place without the need for tools.

What are the key features of the Harrison Design 1911 Frame Fixture?

Key features include a sine bar expansion system for tool-less tightening, a relief cut for the magazine catch, and a separate cut for the ejector. These allow for easy installation and use on various 1911 frames.

Can the Harrison Design 1911 Frame Fixture be used on a fully assembled 1911?

Yes, the fixture can be used on a fully assembled 1911 frame. It's designed to provide clearance for the magazine catch, allowing you to press it and ensure proper fit before locking the fixture in place.

How do you remove the Harrison Design 1911 Frame Fixture?

To remove the fixture, you simply tap the opposite end of the rod. This action disengages the sine bar mechanism, releasing the tension and allowing the fixture to be easily extracted from the magazine well.

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