30" 80Grit Diamond Magnetic Disc | Nickel Bond Grinding & Shaping for Lapidary & Glass

Diamond Magnetic Backing Disc (6", 8", 10", 12", 14", 16", 18", 20", 24") is engineered for high-precision lapidary, glass, and stone grinding. Designed for speed, accuracy, and long service life, it delivers fast stock removal and consistent surface flatness.
Featuring a strongmagnetic backing, the disc allows for quick and effortless disc changes—ideal for progressive grinding and polishing workflows. The industrial-grade diamond coating ensures uniform cutting efficiency, excellent heat dissipation, and reduced loading during extended use. Its perfectly balanced construction minimizes vibration, improving stability and precision on flat lapsand polishing machines. Available with both magneticand PSA (pressure-sensitive adhesive)backing options.

Applications

Ideal for a wide range of precision grinding and surface preparation tasks, including:

• Preparing and shaping gemstones for faceting or cabbing.
• Flattening and smoothing stone surfaces.
• Grinding and polishing glass panels to achieve a clean, flat finish.
• Speeding up workflow in professional lapidary shops with reduced processing time.

Features

• 100% electroplated diamond grit for maximum cutting efficiency and durability.
• Ultra-thin 2.3 mm profile for precise, flat, and uniform grinding.
• Magneticand PSAbacking for fast changes and secure attachment.
• Nickel bond improves grit retention and extends the lifespan of the disc.
• Heat-dissipating construction reduces friction and prevents overheating.
• Rust-resistant surface ideal for continuous wet grinding.
• Available in multiple diameters (6"–24")  to fit all major flat-lap machines.
• Suitable for gemstone, glass, and stone  grinding, smoothing, and prep work.