3M Scratch Erasers — Mounted 3" and 4" — coarse to very fine

Also known as 3Mâ„¢ Scotch-Brite EXL Unitized Abrasives, these discs burnish ("massage" or "blend") your metal, removing scratches and surface imperfections. When used in succession from coarse to very fine, these surface conditioning discs leave an amazing brushed, satin, or pre-polished finish. They are highly recommended for all your metalworking needs.*

Jewelry Applications:

Excellent for "wiping off" or "blending in" scratches and scuff marks on precious metals. Also great for removing porosity and parting lines in jewelry castings. Unlike traditional abrasives, these do not remove precious material. Instead, the burnishing technology redistributes it along the surface—similar to spreading frosting on a cake. Use the coarse grades to quickly remove heavy scratches and finer grades for light scratches and achieving pre-polished, satin finishes.

Why Choose the Mounted Option?

For the best value and convenience, choose the "MOUNTED" option. The abrasives will be pre-mounted before shipping, so they are ready to use upon arrival.

Available Grades:

• Coarse
• Medium
• Soft Fine (NEW!)
• Fine
• Very Fine

* Not recommended for carbide (high-carbon) metals, lapidary, or glass.

** Some images may be digitally enhanced and could slightly differ from actual items.

• Also known as 3M Scotch-Brite EXL unitized abrasives. They burnish metal, removing scratches and surface imperfections.
• Used in succession from coarse to very fine they leave a brushed, satin or pre-polished finish.
• Jewelry: wipes off or blends in scratches and scuff marks on precious metals, and removes porosity and parting lines in castings.
• They do not remove precious material — the burnishing redistributes it along the surface.
• Use the coarse grades for heavy scratches and the finer grades for light scratches and satin finishes.
• Grades: coarse, medium, soft fine, fine and very fine, plus 3-piece and 4-piece combo sets.
• Not recommended for carbide (high-carbon) metals, lapidary or glass.