Twincut Concave Cutter - Busch - Fig. 411T

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The Busch TWINCUT Concave Burr Fig. 411T is a premium German-made rotary bur specifically developed for professional stone setters, jewellers and goldsmiths.

Manufactured from a single piece of high-quality tungsten vanadium steel, this innovative concave cutter delivers exceptional precision, concentricity and durability.

Designed primarily for chaton and claw setting work, the Fig. 411T allows you to round, shorten and smooth claws in one simple operation, saving time while producing clean, professional results.

The advanced Twincut blade geometry provides aggressive yet controlled cutting with two efficient chip channels that quickly remove material and prevent clogging. Its thin cup walls allow easy access between closely spaced claws, making it ideal for fine stone setting applications.

The rounded cup profile also improves visibility of your workpiece, giving greater control during delicate finishing operations.

Suitable Materials

• Gold
  
• Silver
  
• Platinum
  
• Brass
  
• Copper
  
• Jewellery wax
  
• Plastics
  
• Other soft non-ferrous metals

Recommended Speed

• 2,500–7,000 RPM

For maximum cutting performance and extended tool life, we recommend using a suitable bur lubricant, such as Burr Life Lubricant, during use.

Specifications

• Brand: Busch
  
• Model: Fig. 411T
  
• Type: TWINCUT Concave Burr
  
• Material: Tungsten Vanadium Steel
  
• Shank Diameter: 2.35 mm (3/32")
  
• Recommended Speed: 2,500–7,000 RPM
  
• Country of Manufacture: Germany
  
• Quantity: Sold individually

The Busch TWINCUT Concave Burr has become a favourite among professional stone setters thanks to its unique three-in-one functionality. By combining claw shortening, rounding and smoothing into a single tool, it significantly reduces finishing time while producing clean, uniform results. The precision-engineered TWINCUT geometry delivers smooth cutting, excellent visibility and long-lasting performance, making it an essential bur for any professional jewellery workshop.

Ideal For: Claw setting, Chaton setting, Stone setting, Jewellery making, Goldsmith work, Silversmithing, Ring manufacture, Jewellery repairs, Wax carving, Model making, Precision metalworking