3M 7000000307 Diamond Lapping Film 30.0 Micron 8x50ft

Product Description

The 3M 7000000307 is a diamond lapping film supplied in roll form, engineered for precision surface finishing of extremely hard materials. The film is constructed from a polyester base coated with precisely graded diamond abrasive particles at a 30.0 micron rating. This consistent particle sizing delivers repeatable, controlled stock removal and surface finish results across each pass. It is used in applications where conventional abrasives fail to hold tight tolerances on hardness, including carbide tooling, ceramics, optical components, and hard coatings. Technicians and toolroom machinists working with precision finishing equipment are the primary installers and users of this product.

This diamond lapping film is suited for use in industrial, toolroom, and precision maintenance environments. The 8 inches wide by 50 ft length roll format accommodates both manual lapping fixtures and automated or semi-automated finishing equipment. The 30.0 micron grade positions this film at the coarser end of the diamond lapping film spectrum, making it appropriate for initial stock removal or surface conditioning steps before progressing to finer micron grades. It is well-matched to applications involving carbide, ceramic, glass, hardened steel, and similar high-hardness substrates.

Key Features

• 30.0 micron diamond abrasive grade for controlled stock removal on hard substrates
• Precisely graded diamond particles ensure consistent, repeatable surface finishes
• Polyester film backing provides dimensional stability during use
• Roll format at 8 inches x 50 ft supports both manual and fixture-based lapping setups
• Effective on extremely hard materials where conventional abrasives underperform

Compatibility

Designed as an OEM-style lapping film roll for use with precision surface finishing equipment and manual lapping fixtures that accept 8-inch-wide roll stock.

Installation Notes

This product is typically handled by toolroom machinists, precision maintenance technicians, or surface finishing specialists. Before loading the film into any lapping or polishing equipment, ensure the machine is powered off and any rotating components have come to a complete stop. Secure the roll according to the equipment manufacturer’s guidelines to prevent film tracking or tearing during operation. Progress through successively finer micron grades to achieve the desired final surface finish.

Technical Specifications

• Abrasive Type: Diamond
• Backing Material: Polyester film
• Micron Grade: 30.0 micron
• Roll Width: 8 inches
• Roll Length: 50 ft
• Core Diameter: 3 inches
• Unit of Measure: Roll
• Weight: 4.5 pounds
• UPC: 00051111499672

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000307