3M 7000044829 Diamond Lapping Film 3.0 Micron Sheet

Product Description

The 3M 7000044829 is a diamond lapping film sheet designed for precision surface finishing on extremely hard materials. Precisely graded diamond abrasive particles are coated onto a dimensionally stable polyester film substrate, delivering a consistent, repeatable finish with each pass. This sheet is rated at 3.0 micron particle size, making it suitable for fine finishing stages where surface quality and flatness are critical. It measures 9 inches by 11 inches, a standard hand-sheet format. HVAC technicians, fiber optic technicians, toolmakers, and precision maintenance trades use lapping films to achieve tight surface tolerances on hard substrates such as carbide, ceramics, and hardened steel.

Diamond lapping film is used in applications requiring controlled material removal on hard, brittle, or wear-resistant surfaces. At 3.0 micron, this sheet fits mid-to-fine finishing sequences, typically following coarser grits and preceding sub-micron polishing stages. Common applications include lapping valve seats, fiber optic connector end-faces, cutting tool edges, ceramic components, and precision mechanical assemblies. The 9 inches by 11 inches sheet size is compatible with hand lapping, backing plates, and flat lapping fixtures. It is sold in a minimum quantity of 10 sheets per order.

Key Features

• Precisely graded 3.0 micron diamond particles for consistent, repeatable surface finish
• Polyester film backing provides dimensional stability and resistance to tearing during use
• Standard 9 inches x 11 inches sheet format fits hand-lapping and fixture-based workflows
• Suitable for extremely hard materials including carbide, ceramics, and hardened steel
• Part of a broader 3M Diamond Lapping Film series spanning 0.10 to 30.0 micron grades

Compatibility

Designed as a general-purpose diamond lapping film sheet for use on extremely hard materials requiring precision surface finishing. No specific equipment or system compatibility was provided by the manufacturer for this SKU.

Installation Notes

Lapping film is typically applied by machinists, precision maintenance technicians, or trade professionals with surface finishing requirements. Before use, ensure the workpiece and lapping surface are clean and free of debris that could cause scratching or uneven material removal. The film should be secured flat against a hard, flat backing plate or surface plate to maintain consistent contact pressure. Follow proper sequencing from coarse to fine micron grades to achieve the target surface finish without removing excessive material.

Technical Specifications

• Particle Grade: 3.0 micron
• Sheet Size: 9 inches x 11 inches
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Weight: 0.05 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10
• UPC: 00051111499535

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044829