8" x 1-1/2" 4-Grit Set Diamond REZ Resin Grinding Wheel for Lapidary & Glass

The 8" x 1-1/2" 4-Grit Set Diamond REZ Resin Soft Grinding Wheels is a high-performance pre-polishing and fine-smoothing collection engineered for lapidary cabochon cutters, mineral collectors, and studio glass artisans. Featuring an 8-inch diameter for greater surface speed and grinding efficiency, this matched 4-wheel progression utilizes advanced REZ resin-bond diamond matrices over thick, high-rebound cushioning foam to deliver flawless scratch removal, uniform curvature conformability, and an exceptional pre-polish finish without flat spots or edge chipping.

Set Inclusions & Progressive Grit Sequence

• 280 Grit (Coarse Smoothing): Rapidly removes coarse tool marks, saw ridges, and aggressive scratches left by electroplated or sintered hard wheels.
• 600 Grit (Fine Smoothing): Eliminates micro-scratches, refines cabochon dome curvature, and establishes a uniform satin finish.
• 1200 Grit (Initial Pre-Polish): Imparts an ultra-smooth, translucent surface on semi-precious stones and glass edges.
• 3000 Grit (High-Luster Pre-Polish): Develops rich color depth and an intense initial gloss, readying stones for final buffing.

Key Features

• Expanded 8" Diameter: Maximizes SFPM (surface feet per minute) for higher grinding throughput and effortless scratch blending compared to 6" wheels.
• Advanced REZ Resin Bond Formulation: Superior diamond retention and thermal resistance provide exceptionally long working life without premature shedding.
• High-Rebound Thick Foam Cushioning: Conforms smoothly to curved cabochon contours, preventing flat spots, chatter marks, and chipping.
• Precision Balanced Composite Core: Heavy-duty composite core runs vibration-free on standard 1-inch machine shafts.
• Universal 1" Arbor with Reducer Bushings: Includes precision reducer bushings to fit 3/4", 5/8", and 1/2" standard lapidary machine shafts.
• Complete 4-Wheel Workflow Kit: Cost-effective professional progression covering every essential stage from initial smoothing to brilliant pre-polish.

Applications

• Lapidary Cabbing & Finishing: Pre-polishing cabochons of agate, jasper, turquoise, quartz, opal, jade, and petrified wood.
• Glass Cold Working & Art Glass: Smoothing ground glass edges, removing punty marks, and pre-polishing studio glass sculptures.
• Mineral & Fossil Specimen Finishing: Polishing delicate fossil surfaces, ammonites, and fine mineral display specimens.

Technical Specifications

• Diameter: 8 inches (203 mm)
• Width: 1-1/2 inches (38 mm)
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings per wheel)
• Set Quantity: 4 Wheels (280, 600, 1200, 3000 Grit)
• Hub Construction: High-Impact Balanced Composite Core with High-Rebound Cushioning Foam
• Bond Type: Advanced REZ Resin Bond Diamond Matrix
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always operate with continuous, steady water coolant to lubricate the wheel face, flush mineral swarf, and prevent heat buildup in the resin bond.
• Apply light to gentle hand contact; excessive pressure causes premature resin wear without improving cutting speed.
• Never dig sharp gemstone corners or points into the wheel face to prevent gouging the flexible resin layer.