8 in Diamond Lapping Film Discs, 10-Pack, PSA-Backed Precision Abrasive

The 8 in Diamond Lapping Film Discs (10-Pack, PSA-Backed) are high-precision micro-abrasive discs coated with tightly graded synthetic diamond powder, engineered for flat lapping and facet pre-polishing of ultra-hard mineral specimens and metallurgical samples.

Key Features

• Precision Monocrystalline Diamond: Micron-graded diamond crystals deliver fast stock removal and consistent finishes on ultra-hard gemstones up to Mohs hardness 9+ (sapphire, ruby, and chrysoberyl).
• Pressure-Sensitive Adhesive (PSA) Backing: Peel-and-stick adhesive bonds flat and true to 8-inch master laps, flat platens, and metallurgical polishing wheels without sliding or creasing.
• 3 mil Polyester Film Substrate: Heavy-duty tear-resistant Mylar backing maintains absolute planarity, preventing facet edge rounding and surface distortion.
• 10-Disc Workshop Pack: Generous 10-pack volume ensures uninterrupted facet workflow, laboratory metallurgical analysis, and optical fabrication.

Recommended Applications

• Precision gemstone faceting and flat pre-polishing on corundum (sapphire, ruby), cubic zirconia, spinel, and synthetic crystals.
• Metallographic sample preparation on tungsten carbide, advanced technical ceramics, and hardened tool steels.
• Optoelectronic substrate flattening, semiconductor wafer sectioning, and glass-ceramic planarization.
• Precision blade, chisel, and hand tool stropping.

Operating Guidelines

• Clean master lap platen surface with alcohol before applying PSA disc.
• Operate wet with clean water or specialized lapping fluid for lubrication and chip removal.
• Use light, uniform contact pressure to extend disc life and maximize cutting efficiency.