3M 7010307669 Diamond Lapping Film Disc 4 Inch

Product Description

The 3M 7010307669 is a diamond lapping film disc engineered for precision surface finishing on extremely hard materials. The abrasive layer consists of precisely graded diamond particles coated onto a dimensionally stable polyester film substrate. This construction delivers a consistent, repeatable finish across multiple passes, making it a standard choice for optical, ceramic, carbide, and composite finishing operations. At 4 inches in diameter, the disc is suited for use on rotary lapping fixtures and polishing machines found in production and laboratory environments. Licensed tradespeople and precision-finishing technicians rely on this disc where conventional abrasives cannot maintain the surface geometry or finish grade required.

This disc is used in applications demanding tight surface flatness and sharp, well-defined edges on hard substrates including ceramics, optical glass, carbide tooling, and advanced composites. It performs in both production floor and precision lab environments where repeatable micron-level finishes are required. The disc format allows for quick changeover on standard lapping and polishing equipment. It is available in grades ranging from 0.10 to 30.0 micron, allowing users to select the appropriate cut rate and final finish for each stage of a multi-step lapping sequence.

Key Features

• Precisely graded diamond particles for controlled, repeatable material removal
• Polyester film backing provides dimensional stability and flatness during use
• Fast cut rate supports increased throughput in production lapping operations
• Produces flatter surfaces and sharper edges compared to conventional coated abrasives
• Uniform finish across the disc surface reduces variation between workpieces
• Available in multiple grades from 0.10 to 30.0 micron for multi-stage finishing sequences

Compatibility

Designed for use on standard rotary lapping and polishing equipment that accepts 4-inch diameter film-backed abrasive discs. Suitable for finishing extremely hard materials including ceramics, carbide, optical glass, and advanced composite substrates.

Installation Notes

Installation and use of diamond lapping film discs is typically performed by precision finishing technicians, optical fabricators, or tool-and-die professionals. Ensure the lapping plate or platen is clean and free of debris before mounting the disc to prevent uneven seating and surface irregularities. Follow equipment manufacturer guidelines for pressure and rotational speed to avoid premature disc wear or substrate damage. Always work through the appropriate grade sequence from coarser to finer micron ratings to achieve the target surface finish.

Technical Specifications

• Diameter: 4 inches
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Grade Range: 0.10 to 30.0 micron
• Unit of Measure: Each
• Minimum Order Quantity: 50
• Weight: 0.01 pounds
• Package Length: 7.71 inches
• Package Width: 6.8 inches
• Package Height: 4.72 inches
• UPC: 00051111561317

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010307669