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Brush Research GBD40024 FLEX-HONE, 4 (101mm) Diameter, 240 Grit, Silicon Carbide Abrasive (Pack of 1)

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$49.37
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100 Ratings
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Reviews

  • tkirk

    Greater than one week

    I used these per ring manufacturer recommendation for grit. Worked perfect. Easy to use.

  • Barry Woolf

    Greater than one week

    great hone I,ll use it for years !

  • Zephrant

    > 3 day

    Easy enough to use, worked well. Easily completed a 307 V8 engine. Not sure how many more it could do, but no visible wear on it. Ill have to store it for decades before Im likely to use it again though.

  • David Sanders

    > 3 day

    These are the best brushes for honing your cylinder walls. I got nice 45 degree hone marks. It works VERY fast you put your drill on low speed and try to time it so you get the right degree of marks. It leaves a TON of residue so plan on power washing your block with cleaners. 3 to 5 passes is all it takes to clean up the walls. Remember you are removing glazing not boring your cylinder wall.

  • William T. Woodring

    > 3 day

    Worked great, as expected.

  • Jack

    > 3 day

    Smooth

  • mbc

    > 3 day

    what a product, real good finishing hone.

  • Shane Smith

    > 3 day

    Was as described

  • Lou S.

    > 3 day

    awesome---cleaned up a 7 inch bore cylinder 10 feet long and shows little wear---highly recommend

  • Mr. Griffin Roob DDS

    > 3 day

    se utilisa para pulir los cilintros de motores.

The Flex-Hone® tool was originally created by Brush Research Manufacturing to deglaze cylinder walls in automotive applications. Brush Research embraced the benefits of a plateau finish and pioneered the concept of plateau honing culminating in the introduction of the Flex-Hone tool in 1972. The Flex-Hone has gained many nicknames over the years and including ball hone, ball style hone, flexihone, dingleberry hone, bead brush, glaze breaker and glaze buster. Flexible honing with the Flex-Hone tool produces an oil holding cross hatch pattern and a true plateau finish free of cut, torn and folded metal. Any type or size of cylinder can benefit from the Flex-Hone®. These abrasive bead style brushes are produced in standard diameters from 4mm to 36 inches. Nine abrasive types are offered including silicon carbide, aluminum oxide, boron carbide and diamond allowing the tool to be tailored to finish any base material. A choice of 11 different grit selections are available for precise control of finish parameters. The elimination of peaks results in rapid ring seating, better oil control, reduced seepage in hydraulic and pneumatic applications and provides better seal performance and longer seal life. Successful applications include firearm chambers, shotgun barrels, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, brake cylinders, wheel cylinders and the list goes on and on. Flex-Hone® tools are also very effective for deburring cross drilled holes, port radiusing and edge blending. Because of its unique construction, the Flex-Hone is self-centering, self-aligning, and self-compensating for wear so it does not require an elaborate set-up or special training. Deburring can be effectively automated and combined in the machining process to allow a complete cylinder finish in one operation or it can be employed as a secondary operation with equal results.

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