3M® PSA Micro-Finishing Film Sanding Strips – 3/4" x 7" | 400, 600 & 1200 Grit | Box of 10

3M® PSA Micro-Finishing Film Sanding Strips – 3/4" x 7" | Box of 10

Achieve smooth, consistent, professional-quality finishes with 3M® PSA Micro-Finishing Film Sanding Strips. These premium precision abrasives are designed for jewelry making, metalworking, scratch removal, and fine surface refinement.

Manufactured using 3M micro-finishing film technology, these abrasive strips provide controlled cutting action and a uniform scratch pattern, making them ideal for preparing precious and non-ferrous metals for buffing and polishing.

Each strip measures 3/4" wide x 7" long and features a convenient pressure-sensitive adhesive (PSA) backing that allows quick attachment to compatible wooden sanding sticks, sanding blocks, and other suitable backing surfaces. Simply peel off the worn abrasive and replace it with a fresh strip.

Available in 400 grit (30 micron), 600 grit (15 micron), and 1200 grit (9 micron), these strips allow jewelers and metalworkers to progressively refine surfaces from general smoothing to fine polishing preparation.

Key Features:

• Premium 3M Micro-Finishing Film: Precision-graded abrasives provide consistent cutting action and uniform surface finishes.

• Pressure-Sensitive Adhesive Backing: Convenient peel-and-stick design allows quick application and replacement.

• Pre-Cut Abrasive Strips: Each strip measures 3/4" x 7" for controlled sanding and detailed finishing.

• Consistent Scratch Pattern: Helps produce smooth, even surfaces while reducing unwanted sanding marks.

• Three Abrasive Grades: Available in 400, 600, and 1200 grit.

• Flexible Finishing Applications: Excellent for sanding jewelry components, edges, flat surfaces, and intricate details.

• Easy Abrasive Changes: Quickly replace worn strips or switch between abrasive grades.

• Convenient Packaging: Sold in boxes of 10 strips.

Available Grits

400 Grit / 30 Micron – Medium

• Ideal for general surface smoothing and intermediate sanding.

• Helps remove moderate scratches and refine surfaces after coarser abrasives.

• Suitable for initial micro-finishing of jewelry components.

600 Grit / 15 Micron – Fine

• Excellent for fine surface refinement and reducing sanding marks.

• Produces a smoother, more uniform finish.

• Ideal for preparing metals for extra-fine sanding.

1200 Grit / 9 Micron – Extra Fine

• Designed for precision finishing and fine scratch reduction.

• Helps create a smooth, refined surface before buffing and polishing.

• Excellent for detailed jewelry finishing applications.

Ideal Applications

• Jewelry fabrication and repair

• Gold, silver, brass, copper, and other non-ferrous metals

• Fine scratch removal and surface smoothing

• Sanding jewelry components and metal edges

• Refining cast and fabricated metal pieces

• Precision sanding with wooden sanding sticks

• Preparing metal surfaces for buffing and polishing

• Professional jewelry workshops and metalworking applications

Product Specifications

• Brand: 3M®

• Product Type: PSA Micro-Finishing Film Sanding Strips

• Abrasive Style: Micro-Finishing Film

• Strip Dimensions: 3/4" x 7" (19.1 x 177.8 mm)

• Backing: Pressure-Sensitive Adhesive (PSA)

• Available Grits: 400, 600, 1200

• Micron Grades: 30, 15, 9 Micron

• Packaging: Box of 10 Strips

• Mounting: Compatible Sanding Sticks or Suitable Backing Surfaces

• Primary Applications: Jewelry Sanding, Scratch Reduction, Surface Refinement, and Polishing Preparation

Recommended Finishing Sequence

For best results, begin with the appropriate abrasive grade for your workpiece and progressively move to finer grades:

400 Grit (30 Micron) → 600 Grit (15 Micron) → 1200 Grit (9 Micron) → Final Buffing & Polishing

This progressive finishing process helps minimize visible scratches and achieve a smooth, consistent surface.

Please Note: These are pressure-sensitive adhesive-backed abrasive strips intended for attachment to compatible sanding sticks or backing surfaces. Wooden sanding sticks are sold separately unless otherwise specified.