3M 7000000305 Diamond Lapping Film 30.0 Micron Roll

Product Description

The 3M 7000000305 is a diamond lapping film designed 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 is available in a 30.0 micron grade and measures 4 inches wide by 50 feet long on a 3-inch core. Machinists, tool grinders, optical technicians, and precision fabricators use this product where conventional abrasives cannot maintain the tight tolerances required on hard substrates such as carbide, ceramics, and hardened steel.

This lapping film is suited for flat lapping, cylindrical lapping, and fine finishing operations in both production and maintenance environments. It is commonly used in tool and die shops, optical fiber connector polishing, precision instrument manufacturing, and anywhere a controlled, fine surface finish is required on hard or brittle workpieces. The 50-foot roll format supports both hand-lapping fixtures and machine applications.

Key Features

• Precisely graded 30.0 micron diamond abrasive for controlled material removal on hard surfaces
• Polyester film backing provides dimensional stability and consistent particle presentation throughout use
• 50-foot roll length suits both production runs and bench finishing work
• 4-inch width accommodates a range of flat and cylindrical lapping fixtures
• 3-inch core fits standard shop dispensers and lapping machine arbors

Compatibility

Designed for use on extremely hard materials including carbide, ceramics, hardened steel, and similar substrates where conventional abrasive films cannot maintain finish consistency. Suitable for use with standard lapping fixtures accepting a 3-inch core roll.

Installation Notes

This film is installed and used by machinists, optical technicians, and precision finishing specialists. Ensure the workpiece and lapping surface are clean and free of contamination before use to avoid introducing scratches from trapped particles. Follow equipment manufacturer guidelines for feed rate and pressure to maintain consistent finish results. Dispose of used film sections per facility waste-handling procedures for abrasive materials.

Technical Specifications

• Abrasive Grade: 30.0 micron
• Roll Width: 4 inches
• Roll Length: 50 feet
• Core Diameter: 3 inches
• Backing Material: Polyester film
• Weight: 5 pounds
• Unit of Measure: Roll
• UPC: 00051111499658

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000305