Busch Fig. 38AU Conical Carbide Bur

– maximum performance for the hardest jewelry materials –

The tapered Busch carbide bur Fig. 38AU is part of the renowned HighTech-TOOLS series by Busch and has been specially developed for the highest demands in professional jewelry manufacturing. Made from ultra-fine grain tungsten carbide and densified through hot isostatic pressing at elevated temperatures, this bur delivers exceptional hardness, durability, and cutting performance.
Optimized for extremely hard jewelry alloys

The HighTech-TOOLS carbide series shows its full strength when working on materials that are notoriously difficult to cut, including:
• Platinum
• Titanium
• White gold
• Steel

Thanks to its extremely dense fine-grain structure, this bur cuts more aggressively than standard carbide burs, produces more precise edges, and delivers a brighter, cleaner finish. This significantly facilitates stone setting and results in visibly improved surface quality.
Durable, powerful, and efficient.

Carbide burs are known for their hardness and long service life – but the Busch® AU series sets a new benchmark. The combination of superior material quality and advanced manufacturing makes the Fig. 38AU particularly:
• long-lasting
• powerful
• wear-resistant
• precise in cutting performance

Tapered carbide bur
Shank diameter: 2.35 mm (3/32")
Recommended operating speed: 5,000 – 10,000 rpm

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