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BRM's Flexible Honing, Surface Finishing, and Deburring Blog

BRM's Flexible Honing, Surface Finishing, and Deburring Blog is the place for conversation and discussion about how to solve difficult finishing problems. For over 50 years, Brush Research Manufacturing (BRM) has helped customers use brushing technology to clean, rebuild, and resurface components ranging from engine cylinders to brake rotors to flywheels to firearms. BRM's Blog on CR4 provides real-world examples of how flex hones and wire brushes work. It also evaluates related technologies and invites questions from the community.

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Surface Finishing in the Firearms Industry

Posted July 31, 2012 10:26 AM by Brush Research

Gun Trade World is a monthly magazine for gun buyers and sellers around the world. Available on-line and in print, the publication reaches over 10,000 production, retail, and wholesale outlets each month. Firearms enthusiasts in over 125 countries also enjoy the magazine's free digital edition, which contains informative articles about pistols, rifles, and shotguns, as well as the shooting trade in general. Feature articles about gun cleaning and maintenance bolster the magazine's broad appeal.

Flexible Honing for Firearms

The August 2012 edition of Gun Trade World features the Flex-Hone for Firearms, a line of brush tools designed especially to improve surface finish in firearms components. Since the late 1970s, when a Belgian shotgun company first tried the Flex-Hone, firearms manufacturers such as Beretta, Colt, Kimber, and Smith & Wesson have all chosen this surface finishing tool. By machining internal surfaces to a plateau finish, gun makers remove tool marks, reduce jamming and brass scarring, and improving firearms performance.

Gun Maintenance for Shooters and Hunters, Too

In the "The basics for gun maintenance," Gun Trade World explains how gunsmiths, shooters, hunters, and hobbyists use the Flex-Hone for Firearms with an electric drill to achieve an OEM-quality surface finish. After the weapon is unloaded and disassembled, users secure the workpiece in a padded vice and the flexible hone in a chuck or collet. Next, they generously lubricate the tool with honing oil, introduce it to the part at low RPMs, and rotate at full RPMs once fully inserted.

Brush Tool Selection and Gun Maintenance Tips

Flex-Hone for Firearms tools are listed by the caliber of the gun and are available in two main abrasive types: silicon carbide (SC) and aluminum oxide (AO). As the Gun Trade World article explains, SC comes in 180-grit (coarse) and 400-grit (medium). This abrasive has a sharper grain structure, making it suitable for the removal of rust, pitting, and tool marks. For regular gun maintenance and an optimal final finish, choose a flexible hone with 800-grit AO (fine) instead. As a rule, we recommend choosing the finest grit tool for the job.

Instructional Video

Flex-Hone tools are designed to produce the optimum plateau surface finish in any type or size cylinder, slide, chamber, magazine tube, or smooth bore barrel. For more information, read the Gun Trade World article and watch our new Flex-Hone for Firearms Instructional Video.

Author's Note: This blog entry originally appeared in BRM's Flex-Hone Blog.

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Previous in Blog: Flexible Honing Featured on Motorz TV   Next in Blog: Industrial Brushes for Earth Moving Equipment