Mounted Abrasive Stone- Medium/Hard - Fig. 649 - Ø2.5mm

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The Busch High Grade Corundum Abrasive Wheel Shape 649 Ø2.5mm is a premium-quality mounted abrasive designed for precision grinding, smoothing, deburring, and pre-polishing of medium-hard metal alloys used in jewelry manufacturing, goldsmithing, silversmithing, and precision metalworking.

Manufactured from high-purity pink aluminium oxide (Al₂O₃), this abrasive wheel offers excellent cutting performance, long service life, and consistent material removal.

The medium grit size combined with a medium bonding hardness provides the ideal balance between cutting efficiency and surface finish, making it suitable for shaping, refining, and preparing metal surfaces prior to polishing.

The Shape 649 tapered point profile is designed for precise access to contours, grooves, internal surfaces, and intricate jewellery details. Its pointed abrasive shape makes it ideal for refining tight areas, smoothing curved surfaces, and finishing delicate cast pieces, making it an essential tool for professional jewellers, workshops, and production environments.

Specification

• Brand: Busch
  
• Material: Pink Corundum (Al₂O₃)
  
• Shape: 649
  
• Diameter: 2.5 mm
  
• Grit: Medium
  
• Bond Hardness: Medium
  
• Recommended Materials: Medium-hard metal alloys
  
• Shank Diameter: 2.35mm

These mounted stones are widely used in jewelry making, goldsmithing, silversmithing, watchmaking, and precision metalworking for grinding, smoothing, deburring, refining castings, removing tool marks, and preparing surfaces for polishing. They are particularly effective on medium-hard metal alloys, offering controlled cutting action and a uniform surface finish.

Busch corundum abrasives are trusted worldwide by jewellers and precision craftsmen for their durability, accuracy, and consistent finishing performance.