Savage Trigger Guard Screw Fix

The rear trigger guard screw on the Savage Model 112 is poorly supported and often strips out, along with a chunk of walnut base wood that goes with it. Here’s how to make a permanent fix.

by Norman E. Johnson
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Accurizing Savage Model 112s

Selection of a non-custom rifle for serious target shooting can be a most difficult choice as inherent quality must be there or all may be for naught. Savage Model 112 rifles challenge the best of them.

by Norman E. Johnson
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Scope Mounting for Accuracy

A well-mounted optic maximizes precision potential of the scope and the firearm it’s mounted to. Here’s how to do it right.

by David Manney
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New Eyes for an Old Woodsman

Upgrading an old iron sight pistol with modern reflex sights.

by Robert Coles
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BackcountryLife Long Range Rifle

BackcountryLife Magazine (https://backcountrylife.net/) discusses a custom long-range rifle project with Pierce Engineering LTD.

Rogers & Spencer Revolver

Working on the Rogers & Spencer .44 revolver converted to centerfire from percussion caps and blackpowder.

by Mark R. Hollensen
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Brush Research Manufacturing

Abrasive Nylon Wheel Brushes Provide Deburring for Extremely Hard Metal Parts

A Special Report

by Jeff Elliott

Brush Research Mfg. Co., Inc.

 

Here’s what you need to know about abrasive nylon wheel brushes and deburring extremely hard metal parts.

When an application calls for surface finishing, cleaning, polishing, deburring, edge blending or removal of paint, rust or other contamination, a wheel brush is often the ideal solution. Wheel brushes are motor-driven and may feature an arbor hole or keyway that supports their use with grinding equipment or CNC machinery.

When metal wire filaments are used, they are excellent tools for light deburring, edge blending and general surface finishing. The brushing action occurs at the edge or face of the tool on machined parts such as steel shafts, gears, turbine blades, or extrusion cut-offs. However, when harder materials are involved, wire filaments can break off, or deform – even if crimped.

Brush Research Manufacturing abrasive nylon wheel brush.

Although knotted wire options are available for more aggressive deburring, for today’s hardened steels and alloys even this type of wheel brush is not sufficient. Alternatively, a recent aggressive deburring or surface finishing the solution is a wheel brush that utilizes abrasive nylon filaments made of silicon carbide. Taking it one step further, diamond grit can be used for the hardest metals and alloys in use today.

 

As an example, steps taken by JR Precision & Welding, a machine shop in Houston, Texas, was able to solve the issue of removing large burrs from machined holes in an extremely hard 4140 steel alloy part used as a muzzle brake for firearms which was proving a challenge.

Brush Research Manufacturing wheel used by JR Precision Welding, before and after.

Here’s how they fixed it.

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