3M 7010360239 Diamond Lapping Film 30.0 Micron Roll

Product Description

The 3M 7010360239 is a diamond lapping film engineered for precision surface finishing on extremely hard materials. Precisely graded diamond abrasive particles are coated onto a dimensionally stable polyester film backing, delivering a consistent, repeatable finish across the full length of the roll. The film measures 1 inch wide by 50 feet long and carries a 30.0 micron abrasive grade, making it well suited for aggressive stock removal while still producing controlled, uniform surface geometry. Technicians use this film when conventional abrasives lack the hardness or consistency needed for demanding finishing work.

This lapping film is used in applications requiring tight surface finish tolerances on hard substrates such as carbide, ceramic, glass, optical components, and hardened tool steels. It is commonly used by machinists, optical technicians, and precision instrument technicians for hand lapping, fixture lapping, and film-backed polishing operations. The roll format allows the user to cut sections to length as needed for flat lapping plates, backing fixtures, or manual stropping setups. Available grades in the 661X series range from 0.10 to 30.0 micron, allowing technicians to step down through grades for progressive finishing.

Key Features

• Precisely graded 30.0 micron diamond abrasive particles for controlled, repeatable material removal
• Polyester film backing provides dimensional stability and resistance to tearing during use
• 1 inch wide by 50 foot roll format for flexible cutting and application to fixtures or lapping plates
• Effective on extremely hard materials including carbide, ceramic, and hardened steel
• Part of the 661X series, available in multiple grades from 0.10 to 30.0 micron for progressive finishing

Compatibility

Designed for use in precision lapping and polishing applications on hard substrates where conventional abrasive films cannot maintain consistent cut rate or finish quality. Suitable for hand lapping, fixture-based lapping, and film polishing setups across industrial and optical trades.

Installation Notes

This film is applied by hand or mounted to a lapping fixture or backing plate and does not require power tools for typical use. Secure the film firmly to the lapping surface to prevent slipping, which can cause uneven stock removal. Use appropriate personal protective equipment including eye protection when working with abrasive films on hard materials. Follow the workpiece manufacturer or shop process documentation for recommended lapping fluid, pressure, and stroke pattern.

Technical Specifications

• Abrasive Grade: 30.0 micron
• Width: 1 inch
• Length: 50 ft
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Unit of Measure: Roll
• Weight: 1 pound
• UPC: 00051111698099

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010360239