3M 7000118210 Diamond Lapping Film 30.0 Micron 2x50 Ft Roll

Product Description

The 3M 7000118210 is a diamond lapping film designed for precision surface finishing of extremely hard materials. It consists of precisely graded diamond abrasive particles coated onto a dimensionally stable polyester film backing. The result is a consistent, repeatable finish across the full length of the roll. At 30.0 microns, this grade is suited for stock removal and initial surface conditioning stages in a lapping or polishing sequence. It is used by machinists, optical technicians, tool and die makers, and precision fabricators working with carbide, ceramics, hardened steel, glass, and similar hard substrates.

This roll format measures 2 inches wide by 50 feet long on a 3-inch core, making it compatible with standard bench lapping setups and automated lapping machines. The 30.0 micron grade is typically the first or second step in a multi-stage finishing sequence, handling aggressive material removal before finer grades take over. Applications include fiber optic connector polishing, precision optical component finishing, cutting tool reconditioning, and hard coating surface preparation in industrial and laboratory environments.

Key Features

• Precisely graded diamond particles for consistent, repeatable surface finish results
• 30.0 micron abrasive grade suited for initial stock removal on hard materials
• Polyester film backing provides dimensional stability during lapping operations
• Roll format (2 inches x 50 feet) allows continuous use and easy cutting to length
• Compatible with carbide, ceramics, hardened steel, glass, and other hard substrates
• Available in a range of grades from 0.10 to 30.0 micron for full polishing sequences

Compatibility

Designed for use in precision lapping and polishing applications requiring diamond abrasive film on a polyester backing. Suitable for bench lapping fixtures, automated lapping machines, and hand lapping setups that accept a 2-inch wide roll on a 3-inch core.

Installation Notes

This product is installed and used by machinists, optical technicians, and precision fabricators in controlled finishing environments. Secure the film firmly to the lapping plate or fixture before use to prevent slipping or tearing. Always begin a multi-stage finishing sequence with the coarsest appropriate grade and progress toward finer grades. Follow the equipment manufacturer guidelines and applicable shop safety procedures when handling abrasive films and hard material workpieces.