A genuine Soviet-made sintered diamond lap, well known among lapidary professionals and gemstone cutters. Manufactured approximately in the late 1990s.
Specifications
- Type: Sintered diamond lap
- Diamond grit size: 40/28 µm
- Approximate grit equivalent: 600 grit
- Bond type: Metal bond
- Bond grade: M2
- Base material: Tool steel
- Arbor hole: 32 mm
- Outside diameter: 140 mm
- Overall thickness: 16 mm
- Diamond layer thickness: Approx. 3 mm
- Weight: 1.65 kg (3.6 lb)Condition: New old stock (NOS). Carefully cleaned to remove minor storage residue.
Designed for rough and intermediate grinding of hard materials, including precious and semi-precious gemstones. The sintered diamond layer provides excellent wear resistance and a long service life, making it suitable for demanding lapidary applications.