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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(30000 available )

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100 Ratings
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Reviews
  • O&R Precision Grinding, INC

    > 3 day

    Worked as advertised and shipped quickly

  • Rod Burkhart

    > 3 day

    worked real good.Used it on a ford flathead motor

  • SECRET SHOPPER

    Greater than one week

    Worked Great !

  • Sheldon Wisoky I

    > 3 day

    Worked very well

  • 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.

  • jeff beary

    > 3 day

    Bought this to rehone the 3.8 Buick cylinders after trying to use them old stone three arm hone devices. I have no idea why I ever thought that contraption would ever work. This thing is a beast. Takes seconds to use properly and I didnt have second thoughts about putting the crank back in and hooking up the Pistons. If you ever plan during your mid-life crisis that you must rebuild an engine, save yourself some time and get this and the next grit under and use these to perfectly hone your sbc or whatever man.

  • Miss Lelah Price PhD

    Greater than one week

    Did A super job on my cylinders, may last for ever.

  • JeremyB

    > 3 day

    Works awesome, followed directions on the box and was very easy to use. Using 10/30 oil, coating the cylinder and tool liberally, using the lowest speed on the dewalt. Using a fast in and out motion with a quicker pace for the last 3 seconds or so, got that nice 45 deg cross hatch pattern. One ball was missing from its wire so I cut that wire off flush, as to avoid any scoring of my cylinder walls.

  • Gonzalez, A

    > 3 day

    Pricey

  • BlueBird

    > 3 day

    Hubby says this is a great tool in his engine rebuild.

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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