3M™ Microfinishing Film Roll 279LW

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Micron-graded Aluminum oxide grain

Durable 5 mil Polyester film (PET) backing

Electrostatically oriented coating with higher grain retention

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  • Micron-graded Aluminum oxide grain
  • Durable 5 mil Polyester film (PET) backing
  • Electrostatically oriented coating with higher grain retention
  • Used for fine finishing

Microfinishing film rolls are flexible tools on a polyester film carrier material that are only used for fine finishing. Fine Finishing Film also achieves a grinding effect because of the oriented grain and higher grain retention capacity and can therefore be used for fine grinding.

Designed for Fine Finishing 3M™ Microfinishing Film Roll 279LW is designed for a variety of common microfinishing applications, from cylindrical and centerless grinding and finishing to roll finefinishing. It’s also a great match for automotive powertrain components, which tend to require a flexible abrasive that can get into hard-to-reach spaces. As a roll, 279LW has great flexibility in terms of its form. The roll can be cut and shaped to meet the dimensions of your part or project and may be used by hand or with microfinishing machines. We engineer 3M™ Microfinishing Film Roll 279LW by anchoring aluminum oxide mineral to a polyester film backing with harder resin. We chose aluminum oxide coarser mineral for this abrasive, because it is a popular choice among industrial professionals who favor the fast cut rate and long life. Aluminum oxide’s hardness, strength and low heat retention help the roll withstand wear and tear. Features a Water-Resistant Polyester Backing 3M™ Microfinishing Film Roll 279LW features a 5 mil polyester backing. In general, film backed abrasives are known for their flexibility, incompressibility and caliper consistency– it’s what makes them a great match for microfinishing operations. The anti-slip or friction coating on the back of the roll aides in preventing slippage during the microfinishing application, which is critical to consistency from part to part. Made with polyester, 3M™ Microfinishing Film Roll 279LW is water resistant and can be run wet or dry. Applying a lubricant like water may help with washing away unwanted swarf and debris, which can clog the roll and cause the mineral to dull prematurely. On dust-generating substrates, using a lubricant can come in handy. Available in a Range of Grades Given that it’s available in a versatile range of grades – from 50 to 100 and exceptional also in 20 and 30 micron – operators can select the right grade for their application. Higher grades, like 100 micron, are good for tougher applications providing coarser finishes, 20 and 30 micron provide higher stock removal rates while giving finest surface finsish and make single grade processes possible Grades are color-coded to reduce the risk for error when there are multiple grades in a sequence. The Benefits of 3M Microfinishing Abrasives Altogether, 3M™ Microfinishing Film Roll 279LW enables you to quickly remove traverse marks and feed lines, eliminate chatter, follow existing geometry and achieve desired Ra (roughness average).These are some of the reasons why this roll and other 3M microfinishing abrasives are used across industries

Typical properties

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.