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The Busch® Fig 156C Hart 90° Burs Set (Sizes 13-18) is the preferred choice for professional jewelers who demand precision, durability, and superior performance. This set of 6 burs, expertly crafted from high-quality Tungsten Vanadium Steel, is designed for detailed tasks such as stone setting, prong shaping, channel cutting, and flush setting. Each bur features uniformly spaced, precision-machined teeth that deliver smooth, accurate cuts with minimal vibration.
With a precise 90° cutting angle, these burs are ideal for creating clean, flawless seats in prongs, enhancing both the design and security of gemstones. Renowned for their exceptional concentricity, Busch® burs ensure consistent, even cutting and finishing at all operating speeds, making them perfectly suited for high-speed rotary tools.
For optimal results and prolonged tool life, it is recommended to use these burs with a lubricant like Gesswein Lube-Stik to reduce heat and friction. Proudly made in Germany, the Busch® Fig 156C burs set embodies world-class craftsmanship and reliability, providing jewelers with tools they can trust for long-lasting, professional-grade performance.
- Brand: Busch®
- Type: 90° Hart Burs Set
- Figure: 156C
- Sizes Included: 13 - 18 (Set of 6 burs)
- Material: Premium Tungsten Vanadium Steel for superior durability and long-lasting sharpness
- Shank Size: 3/32" (2.38 mm) diameter
- Overall Length: Approximately 1.75" (44 mm)
- Head Diameter Range: Corresponds to sizes 13-18 (exact diameters vary per size within this range)
- Cut Type: Cross-cut for smooth, even cutting and precise control
- Shape: Cylinder Square with 90° cutting angle (Hart)
- Applications: Ideal for stone seat cutting, prong notching, channel and flush setting, and bright cutting on various precious metals
- Lubricant Recommended: Gesswein Lube-Stik or equivalent to reduce friction and extend tool life
- Operating Speed: Refer to ANSI B74.18 standards for maximum safe speeds based on bur size; typically suitable for high-speed rotary tools (flex shaft, Dremel, etc.)
- Concentricity: High precision concentricity for reduced vibration and accurate cutting
- Manufactured: Made in Germany, ensuring top-tier craftsmanship and consistent quality
- Package: Set of 6 burs in sizes 13 through 18, providing a comprehensive range for detailed jewelry work
- Safety: Always wear protective eyewear and follow recommended operating speeds for safe usage
- Maintenance: Clean burs after use with a soft cloth to maintain cutting efficiency and sharpness
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Features
90° Hart Shaped Burs: Specifically designed for precise stone setting, prong shaping, channel cutting, and detailed metalwork applications.
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Precision-Cut Teeth: Uniformly spaced, cross-cut teeth ensure smooth, accurate, and consistent cutting for clean finishes.
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High Concentricity: Exceptional concentricity reduces vibration, enabling smooth operation and precise control at all speeds.
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Durable Tungsten Vanadium Steel: Crafted from premium tungsten vanadium steel for superior strength, wear resistance, and prolonged sharpness.
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Sizes 13-18 (Set of 6): Provides an ideal size range for various jewelry tasks, including larger prongs and wider channel cuts.
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Compatible with Standard Tools: Fits most rotary tools, flex shafts, and Dremels with a 3/32" (2.38 mm) shank for versatile use.
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Ergonomic Length: Approximately 1-3/4" (44.5 mm) length offers easy handling and precise maneuverability during intricate work.
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Cross-Cut Design: Enhances cutting efficiency, minimizes clogging, and delivers a smooth surface finish across different metals.
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Versatile Application: Suitable for gold, silver, platinum, and other precious metals, ideal for fine jewelry making and repair.
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German Engineering: Manufactured in Germany, assuring consistent quality, reliability, and exceptional craftsmanship.
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Lubricant Recommended: Use with Gesswein Lube-Stik or similar lubricants to reduce friction, prolong bur life, and maintain peak sharpness.
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Safety and Maintenance: Easy to clean and maintain; always use with protective eyewear and adhere to recommended operating speeds for optimal safety and performance.
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