3M PSA Micro-Finishing Aluminum Oxide Abrasive Discs – 6" Diameter | 60, 30, 15 & 9 Micron

3M PSA Micro-Finishing Discs – 6" Diameter | 60, 30, 15 & 9 Micron

Achieve exceptional surface refinement and consistent finishing results with 3M PSA Micro-Finishing Abrasive Discs. These premium 6-inch diameter discs feature precision-graded aluminum oxide abrasives designed for controlled material removal, uniform scratch patterns, and professional-quality metal finishing.

Manufactured using 3M's micro-finishing abrasive technology, these discs provide a consistent cutting action that helps produce smooth, even surfaces while reducing unwanted sanding marks.

The pressure-sensitive adhesive (PSA) backing allows convenient attachment to a compatible 6-inch aluminum backing plate, providing a stable working surface for precision sanding and finishing applications.

Available in 60, 30, 15, and 9 micron, these discs offer a progressive finishing system, allowing jewelers and metalworkers to move from initial surface refinement to increasingly finer finishes before final buffing and polishing.

Ideal for jewelry fabrication, precious metal finishing, metalworking, and precision surface preparation.

Key Features:

• Premium 3M Aluminum Oxide Abrasive: Precision-graded abrasive particles provide controlled cutting action and consistent finishing performance.

• Micro-Finishing Technology: Produces a uniform scratch pattern for smooth, professional-quality results.

• Pressure-Sensitive Adhesive Backing: Allows easy attachment to a compatible 6-inch aluminum backing plate.

• Consistent Surface Finish: Helps reduce uneven sanding marks and surface imperfections.

• 6" Diameter: Provides generous working surface coverage for efficient sanding and finishing.

• Four Micron Grades: Available in 60, 30, 15, and 9 micron.

• Progressive Finishing System: Allows users to move through increasingly finer abrasive grades.

• Professional Finishing Performance: Suitable for jewelry fabrication, repair, and precision metalworking.

• Maximum Operating Speed: 3,000 RPM.

Available Micron Grades:

• 60 Micron – Coarse: Ideal for initial surface refinement, removing noticeable scratches, smoothing rough metal surfaces, and preparing workpieces for finer abrasives.

• 30 Micron – Medium: Excellent for general surface smoothing, reducing scratches left by coarser abrasives, and intermediate finishing.

• 15 Micron – Fine: Designed for fine surface refinement, reducing visible sanding marks, and preparing surfaces for final finishing.

• 9 Micron – Extra Fine: Provides fine micro-finishing for a smooth, uniform surface before buffing and polishing.

Ideal Applications:

• Jewelry making and repair

• Precious and non-ferrous metal finishing

• Gold, silver, brass, and copper surface preparation

• Scratch removal and surface smoothing

• Refining cast and fabricated metal components

• Precision sanding and micro-finishing

• Preparing metal surfaces for buffing and polishing

• Professional jewelry workshops and metalworking applications

Specifications:

• Brand: 3M

• Product Type: PSA Micro-Finishing Abrasive Discs

• Abrasive Material: Precision-Graded Aluminum Oxide

• Disc Diameter: 6" (152.4 mm)

• Backing Type: Pressure-Sensitive Adhesive (PSA)

• Available Micron Grades: 60, 30, 15, and 9 Micron

• Required Mounting: 6" Aluminum Backing Plate

• Maximum Operating Speed: 3,000 RPM

• Primary Applications: Micro-Finishing, Scratch Reduction, Surface Refinement, and Polishing Preparation

Recommended Finishing Sequence:

For best results, begin with the appropriate micron grade for the condition of the workpiece and progressively move to finer abrasives:

60 Micron → 30 Micron → 15 Micron → 9 Micron → Final Buffing & Polishing

Using progressively finer grades helps produce a more uniform finish while minimizing visible scratches.

Important: These pressure-sensitive adhesive discs must be used with a compatible 6-inch aluminum backing plate. Do not exceed the maximum operating speed of 3,000 RPM or the backing plate manufacturer's lower rated speed.

Backing plate sold separately unless otherwise specified.