Blue Zirconia Snap-On Sanding Discs – 3/4" & 7/8" (50 Pack)

The Blue Zirconia Snap-On Sanding Discs are professional jewelry abrasives designed for grinding, smoothing, surface blending, and pre-polishing precious metals. Made with durable zirconia abrasive bonded to thin, flexible backing paper, these discs provide efficient material removal when working with platinum, gold, silver, and other suitable metals.

Available in 3/4-inch and 7/8-inch diameters with Coarse, Medium, and Fine grit options, these snap-on abrasive discs are ideal for jewelry repair, metal finishing, and detailed bench work. Each box contains 50 discs of the selected size and grit.

Efficient Sanding and Finishing for Jewelry Metals

Zirconia abrasive is particularly useful when working with harder metals such as platinum. Its cutting action helps jewelers remove surface imperfections, refine soldered areas, smooth casting marks, and prepare metal surfaces for subsequent polishing.

• Platinum finishing: Smooth and refine hard metal surfaces during jewelry fabrication and repair.
• Gold and silver jewelry: Remove scratches, tooling marks, and minor surface irregularities.
• Surface blending: Refine transitions between worked and surrounding metal surfaces.
• Pre-polishing: Prepare jewelry components for finer abrasives or final polishing compounds.

Choose the Right Grit and Disc Size

Three abrasive grades are available to accommodate different stages of jewelry finishing:

• Coarse: For initial sanding, more aggressive material removal, and correction of noticeable surface marks.
• Medium: For general-purpose smoothing, blending, and refining surfaces after coarse sanding.
• Fine: For lighter surface refinement and preparation before final polishing.

Choose the 3/4-inch diameter for smaller working areas and more controlled access, or the 7/8-inch diameter for slightly greater surface coverage.

Product Specifications

• Product type: Snap-on abrasive sanding discs
• Abrasive material: Zirconia
• Color: Blue
• Backing: Thin, flexible, resin-bonded paper
• Mounting: Snap-on center for compatible mandrels
• Available diameters: 3/4" (19.05 mm) and 7/8" (22.23 mm)
• Available grits: Coarse, Medium, Fine
• Water resistance: Water-resistant construction
• Maximum operating speed: 20,000 RPM, as specified by SEP Tools
• Quantity: 50 discs per box
• Applications: Jewelry sanding, grinding, surface blending, and pre-polishing

Snap-On Mounting and Compatible Tools

These discs are designed for use with compatible snap-on mandrels, allowing quick disc changes during multi-step finishing operations. The flexible backing helps the abrasive conform to gently curved surfaces while maintaining control during sanding.

For mounting, see the Snap-On Mandrel with 3/32-Inch Shank, and confirm the disc-to-mandrel fit before use.

Always observe the 20,000 RPM disc speed limit and any lower speed limit specified for the mandrel or rotary tool. Wear appropriate eye protection, use controlled pressure, and inspect discs for damage before operation.

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