3M™ Flexible Diamond 6457J - Custom Sizes

  • 3M Product Number 6457J
  • 3M ID B40068442

Flexible backing is ideal for contours

Large and small open dot patterns available for applications where loading and swarf removal are special concerns

Diamond mineral excels at cutting hard-to-grind materials

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  • Flexible backing is ideal for contours
  • Large and small open dot patterns available for applications where loading and swarf removal are special concerns
  • Diamond mineral excels at cutting hard-to-grind materials
  • Very flexible backing readily conforms to contours
  • Diamond abrasive works well on hard to grind materials
  • Metal bonding adds durability and long belt life
  • Open dot construction helps minimize loading, prolonging abrasive service life

Custom sized for fine finish sanding of contours on hard-to-grind materials, the 3M™ Flexible Diamond 6457J is ideal for light pressure grinding. Metal bonding of the diamond abrasive to the backing ensures durability, while the open dot pattern reduces loading. Products with the smaller 18 generally will have finer finishes, whereas the B2 pattern will be more aggressive.

VF Backing Excels at Light Pressure Grinding on Contoured surfaces
Combining the strength of a hard mineral abrasive with a very flexible (VF), conformable backing, our 3M™ Flexible Diamond 6457J is built for achieving refined finishes even around contours. Most suitable for grinding applications requiring light pressure such as blending and finish sanding of contours, this diamond abrasive is built for use on hard-to-grind surfaces including thermal sprays, carbides, composites, chilled iron, non-ferrous metals and glass.

Built Tough, Finishes Fine
We fasten the diamond mineral particles on 3M™ Flexible Diamond 6457J using a metal bond. Compared to resin or vitrified bonds, metal bonds tend to be the most tough — helping to strengthen the diamond abrasive and make it more durable. This VF cloth backing works very well for complicated geometries.

3M ID Backing Type Description
6003J VF Very flexible backing; available in rolls only.
6450J C More flexible than Type G. Best construction for short belts. Suitable for slack belt operations, such as glass seaming, hot roll finishing. Weldlok splice.
6451J G Low stretch, for use with contact wheels. Suitable for roll grinding. Use for roll finishing when closer caliper splice is required. Weldlok splice.
6454J V2S Most flexible backing. Used for lighter duty applications, such as blending and finishing contours.
6456J YFB Least amount of stretch of all backings. Excellent water resistance. Very close to zero caliper splice, for centerless finishing where caliper control is important. Use in roll form for superfinishing.
6457J VF Very flexible backing with moderate stretch. Ideal for use on contoured surfaces. Weldlok splice.
Our Open Dot Pattern: What Does it Mean?
The open dot pattern on each 3M™ Flexible Diamond abrasive product means that the diamond mineral particles are adhered to the backing in a series of small dots. This is designed to provide aggressive cutting action while also allowing consistent space for evacuation of stock particles during use, helping reduce loading and prolonging the life of the abrasive surface without sacrificing cut rates.

3M™ Flexible Diamond Belt 6457J is available in two open dot patterns for a range of uses. Pattern 18 is a small dot pattern equating to 25 pellets per inch. Our B2 Pattern has medium dots with 17 pellets per inch, and is designed to deliver an aggressive cutting action with improved coolant flow and increased swarf removal. Generally, the smaller dot patterns will be the least aggressive and produce finer finishes, whereas the larger dot patterns will be more aggressive for stock removal.

Designed for light pressure grinding applications
Recommended Applications
  • Designed for light pressure grinding applications
  • Blending
  • Finish Sanding
  • Contoured surfaces
  • Excellent for use in glass seaming operations
  • HVOC coatings
Better Science for Better Sanding from 3M
Part of the 3M portfolio of Superabrasives, our 3M™ Flexible Diamond 6457J is an outstanding example of how 3M applies science to the lives of professionals in a range of specific industries where excellent grinding and finishing are critical. From its hard diamond mineral abrasive to its flexible cloth backing, it is built by 3M to help businesses like yours operate faster, better and more efficiently.

Learn More About 3M™ Flexible Diamond and More Superabrasives (PDF, 1.95 Mb)

Typical properties

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