6" x 1-1/2" 280 Grit Lapidary Diamond Hard Flat Grinding Wheel

The 6" x 1-1/2" 280 Grit Lapidary Diamond Hard Flat Grinding Wheel is a fine pre-polishing hard wheel designed for standard 6-inch vertical cabbing units and arbor grinding setups. Precision-machined with a seamless solid steel core and coated with high-purity electroplated 280-grit monocrystalline diamonds, this wheel provides critical pre-polish scratch eradication without edge flexing. It produces a remarkably smooth, uniform semi-matte surface on agate, jasper, quartz, jade, ceramic, and glass, establishing the perfect foundation for resin-bond smoothing and high-gloss polishing.

Key Features

• Precision Steel Core Construction: Machined from solid steel to eliminate runout and provide whisper-quiet, vibration-free rotation at 1400–1800 RPM.
• High-Density Electroplated Diamond Coating: Fine 280-grit diamond particles are bonded securely in a tough nickel matrix, delivering consistent abrasion without diamond stripping.
• Critical Pre-Polish Refinement: Removes 180-grit and 220-grit scratches effortlessly, leaving a smooth satin finish that minimizes subsequent resin sanding time.
• True-Flat Face Profile: Retains strict dimensional stability across the full 1-1/2" width, perfect for grinding crisp edges, flats, and precise cabochon girdles.
• Standard 1" Arbor with Reducer Bushings: Includes precision reducing bushings to fit 3/4", 5/8", and 1/2" arbors easily.

Applications

• Cabochon Final Shaping & Pre-Polishing: Pre-polishing cabochon domes and calibrating girdles on agate, jasper, jade, and quartz.
• Glass Cold Work Edge Refinement: Fine edge seaming, bevel smoothing, and finishing on art glass and fused glass pieces.
• Mineral Specimen Prep: Finishing flat display faces, quartz geodes, and petrified wood slabs.

Technical Specifications

• Diameter: 6 inches (150 mm)
• Width: 1-1/2 inches (38 mm)
• Grit: 280 Grit (Fine Pre-Polish)
• Core Material: Solid Steel
• Bond Type: Electroplated Diamond
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always use continuous water cooling to flush mineral slurry and keep work surfaces cool.
• Apply light, gentle hand pressure; let the diamond do the cutting to achieve the finest possible surface finish.
• Avoid concentrated corner point pressure to protect the rim edge diamonds.