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

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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How to Select Flexible Hones for Long Guns

Posted January 13, 2014 2:07 PM by Brush Research

Flexible honing tools are used to finish and polish shotguns, rifles, revolvers, pistols, and paint ball guns. Suitable for any smooth bore, these reliable gun tools are ideal for any type or size of barrel, cylinder, chamber, slide, or magazine tube. Trusted by gunsmiths and the firearms industry alike, Flex-Hone tools for firearms are also preferred by hunters and target shooters. This video explains.

Tool Types, Abrasive Types, and Grits

Selecting the right Flex-Hone for a shotgun or rifle is also an easy task when you know how BRM gun tools are specified. When you visit the Flex-Hone Tools for Firearms page on our website, choose the image for either the Flex-Hone for Shotguns or the Flex-Hone for Rifles. The page that displays then shows one or more product types. There are three types of Flex-Hone tools for Shotguns: barrel hones, chamber hones, and forcing cones. The Flex-Hone for Rifles is designed for rifle chambers.

On the BRM website, each gun tool has three dropdown boxes. The top one is labeled Type. Use it to specify the gauge (GA), caliber (CAL), and/or model of your weapon. Use the other dropdown boxes to select the abrasive type and grit. Choose aluminum oxide (AO) abrasive for finer finishing, polishing, and cleaning. Choose silicon carbide (SC) for removing tool marks, oxidation, and corrosion.

Grit selection is important to consider. As a rule, the lower the grit, the coarser and more aggressive the Flex-Hone for Firearms. Use 800 grit for a final finish. If your gun's surface is in good condition, a single grit may be all that's necessary. For working on pitting, oxidation and corrosion, choose 180 grit. Many gunsmiths need something between 180 grit and 800 grit, however, so BRM also offers 400 grit.

Gun Tools for Shotguns and Rifles

As noted above, there are three types of Flex-Hone tools for shotguns: barrel hones, chamber hones, and forcing cone hones. Flexible hones for shotgun barrels feature a protective shrink tube coating on the stem wire to protect the barrel. Shotgun chamber hones have a 3" abrasive part and 12" overall length (OAL). With forcing cone hones, the abrasive part of the gun tool is 1-5/8" and the OAL is 10".

Shotgun barrel hones are available for 10, 12, 16, 20, and 28 GA as well as .410 bore. Medium and fine grits are offered for each gauge, and users can choose 180 SC, 400 SC, or 800 AO barrel hones. All shotgun chamber hones feature fine-grit 800 AO for an ultimate finish. Choose 10, 12, 16, 20, and 28 GA or .410 bore. For forcing cone hones, select medium, fine, or ultra-fine grits for 12, 16, 20 and 28-gauge shotguns.

Flex-Hone tools for rifles remove residues, surface imperfections, and machining marks while imparting a wear-resistant finish. Available in SC abrasive, these gun tools have a 1-5/8" abrasive part and come in OALs of 6", 8", 12", and 14". BRM supplies rifle chamber hones for a wide variety of guns, including .17 CAL/.22 MAG, .223 Remington, .243, .357, 25-06, 30-06, .308, .44 MAG, .44 CAL, .45 COLT, 50 BMG, 5.56 NATO, 6.88MM, 7.62x39MM SAAMI, and 7.62x51MM NATO.

Author's Note: This CR4 blog entry originally appeared in the Flex-Hone Blog.

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Re: How to Select Flexible Hones for Long Guns

01/16/2014 9:39 AM

I don't want to use a flexible hone on my long gun, because it would be too scratchy.

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