How to surface grind a hammer!

This video demonstrates a gunsmithing technique for improving the surface finish of a Ruger Wrangler hammer using a surface grinder. The process involves flattening the MIM (Metal Injection Molding) hammer's surface to remove waviness and achieve a crisp, flat appearance. It highlights the necessity of both machine grinding and subsequent handwork with sandpaper to achieve a uniform, polished finish that enhances the firearm's overall character.

Quick Summary

Surface grinding a Ruger Wrangler hammer transforms its MIM (Metal Injection Molding) surface from wavy and matte to crisp, flat, and clean. This gunsmithing technique involves using a surface grinder to level the part, followed by hand-sanding with 220 and 320-grit sandpaper to achieve a uniform, polished finish.

Chapters

  1. 00:01Introduction to Hammer Grinding
  2. 00:17The Challenge: MIM Hammer Surface
  3. 00:31The Goal: Polished Hammer Finish
  4. 00:42Demonstrating Surface Imperfections
  5. 00:53How a Surface Grinder Works
  6. 01:07First Grinding Passes
  7. 01:25Progressive Grinding Stages
  8. 01:33Final Grind and Marks
  9. 01:48The Necessity of Handwork
  10. 01:53Sanding Technique with 220 Grit
  11. 02:15Comparing Ground vs. Finished Side
  12. 02:26Before and After: Unpolished vs. Finished
  13. 02:34The Magic of Surface Grinding and Handwork
  14. 02:46Conclusion and Future Content

Frequently Asked Questions

What is the purpose of surface grinding a Ruger Wrangler hammer?

Surface grinding a Ruger Wrangler hammer aims to remove the inherent waviness and matte finish of MIM (Metal Injection Molding) parts. The goal is to achieve a crisp, flat, and clean surface with a uniform polish, enhancing the firearm's aesthetics and potentially its feel.

What tools are needed for surface grinding a firearm hammer?

Essential tools include a surface grinder with a magnetic chuck and precision grinding wheel for the initial flattening. Post-grinding, you'll need flat sanding sticks, 220-grit and 320-grit sandpaper, and a lubricant for refining the surface finish.

How do you refine the surface after using a surface grinder on a hammer?

After surface grinding, handwork is crucial. Use 220-grit sandpaper on a flat sanding stick, moving in the direction of the original grinding marks. Progress to finer grits like 320-grit to achieve a uniform, polished appearance and remove any residual grinding marks.

Why are MIM hammers often wavy or matte?

MIM (Metal Injection Molding) is a cost-effective manufacturing process for complex parts. While efficient, it can sometimes result in a slightly wavy surface texture and a matte appearance, which gunsmiths may choose to refine for improved aesthetics and feel.

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