850x290mm 800Grit Diamond Sandpaper Sheet – Abrasive Grinding Sheet for Glass, Stone & Lapidary Polishing

The 850x290mm 800 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 mirror pre-polish surface finishing 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.
• Micro-Fine 800-Grit Diamond Matrix: Produces a near-optical satin polish and ultra-smooth tactile touch, preparing glass and stone for final cerium oxide or diamond paste buffing.
• 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: High-clarity edge finishing, bevel pre-polishing, and fine luster restoration on art glass and decorative panels.
• Lapidary & Gemstones: Final pre-polish stage on cabochons, slabs, and carvings in agate, jade, jasper, and quartz before felt or leather wheel buffing.
• Ceramic & Porcelain: Micro-finishing and edge hone polishing on precision ceramics and composite tiles.

Technical Specifications

• Dimensions: 850 mm x 290 mm (33.5" x 11.4")
• Grit: 800 Grit (Micro-Fine Pre-Polish / Satin Sheen Preparation)
• 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.