8" x 1-1/2" 100 Grit Sintered Diamond Grinding Wheel (Metal Bonded)

The 8" x 1-1/2" 100 Grit Sintered Diamond Grinding Wheel (Metal Bonded) is a continuous-rim commercial shaping wheel engineered for standard 8-inch lapidary cabbing machines, production gemstone preforming, and precision glass cold working. Featuring a solid 5mm deep continuous sintered diamond matrix bonded with durable bronze alloy, this wheel bridges coarse 60/80-grit roughing with fine pre-polishing. It rapidly eliminates deep saw marks and coarse gouges while allowing lapidaries to hold precise cabochon girdles and uniform surface planes across agates, jaspers, quartz, jade, and art glass.

Key Features

• Full 5mm Sintered Diamond Rim: High-density 100-grit monocrystalline diamond abrasive is integrated throughout a solid 5mm metal matrix layer for years of continuous, heavy-duty workshop performance.
• Balanced Stock Removal & Smooth Contouring: Quickly removes coarse scratch lines while maintaining chip-resistant, accurate gemstone profiles and smooth glass bevels.
• Continuous Self-Sharpening Cutting Action: Controlled matrix erosion constantly exposes fresh, sharp diamond crystals across the entire lifespan of the tool.
• Precision-Balanced Steel Core: Machined steel hub delivers smooth, vibration-free rotation at standard cabbing speeds (1400–1800 RPM), protecting motor arbor bearings and ensuring clean grinding contact.
• Standard 1" Arbor with Reducer Bushings: Includes precision bushing adapters to fit 3/4", 5/8", and 1/2" machine arbors seamlessly.

Applications

• Intermediate Gemstone Shaping: Refining primary cabochon silhouettes and smoothing coarse gouges on agate, jasper, jade, quartz, and petrified wood.
• Glass Cold Working & Beveling: Truing sawed glass borders, edge beveling, and smoothing cold-worked art glass components.
• Mineral Specimen Prep: Pre-polishing flat faces and squaring edges on slabs and mineral specimens prior to resin smoothing.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 1-1/2 inches (38 mm)
• Grit: 100 Grit (Intermediate Shaping)
• Diamond Layer Depth: 5 mm
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Bond Type: Sintered Metal (Bronze Matrix)
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always operate with continuous, generous flood water cooling to flush rock swarf, suppress dust, and prevent diamond matrix glazing.
• Use light to moderate hand contact; allow the sharp diamond particles to grind without forcing the workpiece.
• Dress periodically with an abrasive dressing stone to maintain peak cutting speed and true rim flatness.