8 in Full Face Diamond Flat Lap Disc for Lapidary Grinding & Polishing

The 8" Full Face Diamond Flat Lap Disc provides 100% usable abrasive surface area with its center-hole-free design, engineered specifically for high-efficiency grinding, flattening, and pre-polishing of gemstones, glass, ceramics, and metals. Built on a balanced, precision-ground steel backing plate, the electroplated industrial diamond coating ensures uniform material removal, exceptional flatness, and extended service life across demanding lapidary and glass studio workflows.

Key Features

• 100% Full-Face Abrasive Surface: No center arbor hole design maximizes surface area for grinding large flats, bevels, cabochons, and sculptural pieces without interference.
• Precision Diamond Electroplating: High-density industrial diamond particles deliver aggressive, cool cutting performance and superior edge retention.
• Precision Flatness: Rigid steel backing ensures true, consistent flat surfaces without crowning or edge tapering.
• Versatile Backing Compatibility: Designed for easy mounting on standard 8" flat lap machines using magnetic master laps, PSA adhesive, or custom fixture setups.
• Wide Machine Compatibility: Compatible with 8" flat lap grinders and polishing workstations including CabKing, Covington, Hi-Tech Diamond, and custom setups.

Applications

• Lapidary & Gemstone Roughing: Pre-forming cabochons, girdle shaping, planar flattening, and facet preparation on agate, jasper, quartz, sapphire, jade, and petrified wood.
• Glass & Crystal Cold Working: Beveling, flattening bottle bottoms, edge smoothing, and pre-polishing on fused glass and art crystal.
• Ceramic & Metallurgy Preparation: Surface preparation, weld flattening, and coarse lapping of technical ceramics and hardened metals.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Arbor / Center Hole: None (Full Face / No Hole)
• Abrasive Material: Industrial Diamond
• Bond Type: Precision Electroplated Bond
• Product Type: Diamond Flat Lap Disc

Operating Guidelines

• Always operate with a continuous water drip or coolant to flush away swarf, extend diamond life, and prevent thermal shock.
• Apply light to moderate, even pressure across the disc face; allow the diamond abrasive to cut without forcing.
• Rinse the disc and workpiece thoroughly after each grit stage to avoid grit contamination.