850x290mm 80Grit Diamond Sandpaper Sheet – Abrasive Grinding Sheet for Glass, Stone & Lapidary Polishing

The 850x290mm 80 Grit Flexible Diamond Sandpaper Sheet is an extra-long industrial electroplated diamond abrasive blanket engineered for stroke sanders, long platen hand sanders, and wide-area coarse-medium surface processing across glass, natural stone, porcelain, and ceramic materials.

Key Features

• Extended 850x290mm (33.5" x 11.4") Dimension: Extra-large format offers generous working surface area for wide stroke sanding blocks, continuous platen wrapping, or custom cutting into custom discs, strips, and belts.
• Uniform 80-Grit Diamond Matrix: Commercial electroplated diamond coating delivers fast cutting speed combined with consistent scratch depth across broad surfaces.
• Flexible Tear-Resistant Cloth Backing: Reinforced waterproof substrate conforms smoothly to curved workpieces, platen beds, and hand blocks without cracking or tearing.
• Wet & Dry Versatility: Fully waterproof backing supports continuous wet sanding with water coolant for dust suppression and extended diamond life.

Applications

• Architectural Glass & Mirrors: Fast edge leveling, seaming, and arris beveling on thick glass slabs and panels.
• Lapidary & Gemstones: Intermediate contouring, slab pre-shaping, and surface leveling on agate, jade, jasper, and quartz.
• Ceramic & Porcelain: Precision edge smoothing and corner truing on ceramic and porcelain tiles.

Technical Specifications

• Dimensions: 850 mm x 290 mm (33.5" x 11.4")
• Grit: 80 Grit (Coarse Shaping / Heavy Stock Removal)
• Bond Type: Electroplated Diamond
• Backing: Flexible Waterproof Cloth
• Operating Method: Wet use recommended (water coolant)

Operating Guidelines

• Use with continuous water coolant or frequent water dipping to maintain cool operating temperatures and flush grinding swarf.
• Rinse clean after use and lay flat to dry to preserve substrate flexibility and diamond integrity.