8" x 1-1/2" 325 Grit Diamond Resin Grinding Wheel – REZ Premium Soft Wheel for Lapidary Polishing & Glass Grinding

The 8" x 1-1/2" 325 Grit Diamond Resin Grinding Wheel (REZ Premium Soft Wheel) provides exceptional intermediate smoothing between coarse grinding and fine polishing stages on lapidary cabochons, glass cold working, and mineral specimens. Built with a high-density monocrystalline diamond matrix embedded in an advanced thermo-setting resin layer over an impact-absorbing closed-cell foam cushion, this versatile soft wheel conforms smoothly to curved contours, eliminating flat spots and harsh edge facets.

Key Features

• Closed-Cell Flexible Foam Cushion: Resilient cushion layer conforms naturally to convex cabochon domes and curved workpieces, preventing chatter marks and facet flats.
• Intermediate 325-Grit Diamond Matrix: Bridges the critical gap between shaping and polishing, erasing micro-scratches and leaving an exceptionally smooth pre-polish surface.
• Heavy-Duty Precision Plastic Hub: True-running, corrosion-proof composite hub guarantees balanced rotation and eliminates vibration at standard cabbing speeds.
• Standard 1-1/2" Working Surface: Popular 1-1/2" face width fits standard 8-inch cabbing machine arbor configurations and multi-wheel shaft setups.
• Superior Wet Grinding Life: Designed for continuous water coolant operation to maintain cool cutting, flush swarf, and prevent resin glazing.
• Standard 1" Arbor with Reducer Bushings: Precision 1-inch bore supplied with reducer bushings to fit 3/4", 5/8", and 1/2" cabbing machine shafts.

Applications

• Lapidary Cabochon Smoothing & Cabbing: Pre-polish surface refining and dome blending on agate, jasper, chalcedony, quartz, jade, and petrified wood.
• Glass Cold Working & Beveling: Edge rounding, rim smoothing, and contour blending on art glass and sculptural glasswork.
• Specimen Pre-Polishing: Pre-polishing face smoothing on cut slabs, fossils, and mineral specimens.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 1-1/2 inches (38 mm)
• Grit: 325 Grit (Intermediate Smoothing & Pre-Polishing Preparation)
• Bond Type: Resin Bond with Flexible Closed-Cell Cushion
• Hub Material: Precision Injection-Molded Polymer Core
• 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 lubrication to flush ground slurry and keep the diamond-resin matrix cool.
• Apply light to moderate, uniform pressure across the wheel face; excessive force causes premature wheel wear without improving cutting speed.
• Keep workpieces moving continuously across the wheel to ensure even surface wear and maintain concentric wheel balance.