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Busch® Burs - 90° Hart, ISO #014 Fig. 156C, 1.40 mm are engineered for high precision and durability, making them an essential tool for professional jewelers. Crafted from premium tungsten vanadium steel, these burs are built to withstand rigorous use while maintaining exceptional cutting performance. Each bur features uniformly spaced, precision-machined cross-cut teeth designed to deliver smooth, even cuts with minimal effort. The 90° Hart angle enables optimal control for intricate tasks such as prong shaping, edge detailing, and fine finishing on a wide range of metals. Ideal for gem setting and other precision work, the 1.40 mm head diameter offers the perfect balance of strength and finesse. These burs are manufactured in Germany, upholding a legacy of engineering excellence and trusted performance in the jewelry industry. The 3/32" (2.38 mm) shank diameter and 1-3/4" (44.5 mm) length ensure compatibility with most rotary tools, including flex shafts and Dremels.
To ensure the longevity of the tool and quality of work, use with a suitable lubricant such as Busch Lube-Stik, and operate within the recommended speed range as noted on the packaging.
Brand: Busch®
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Product Type: 90° Hart Bur
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ISO Number: #014
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Bur Size (Head Diameter): 1.40 mm
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Figure: 156C
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Cut Type: Cross-cut
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Shape: Cylinder Square
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Shank Diameter: 3/32" (2.38 mm) – compatible with most rotary tools
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Overall Length: Approx. 1-3/4" (44.5 mm)
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Material: High-grade tungsten vanadium steel
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Country of Origin: Germany
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Pack Quantity: 6 burs per pack
Product Features
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Durability: Made from premium tungsten vanadium steel for long-lasting edge retention.
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Precision Cutting: Cross-cut design with uniformly spaced teeth ensures clean, accurate results.
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Specialized Design: 90° Hart angle enables superior control in fine jewelry detailing.
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Compatibility: Fits standard rotary tools, including Dremels and flex shafts.
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Versatility: Ideal for gem setting, prong forming, edge shaping, and fine detailing.
Usage Instructions
Safety Information
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Always wear appropriate eye protection while operating rotary tools.
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Keep burs out of reach of children.
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Ensure the bur is properly installed before starting the tool to avoid breakage or injury.
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Features
Premium Tungsten Vanadium Steel:
Engineered from high-grade tungsten vanadium steel for exceptional durability, heat resistance, and long-term performance in professional jewelry applications.
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Precision-Cut Teeth:
Uniformly spaced and finely machined teeth ensure clean, accurate cuts with minimal chatter—ideal for detailed, high-precision tasks.
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90° Hart Angle Head:
Specifically designed with a sharp 90° point to deliver superior control in prong shaping, edge refinement, and intricate detailing in precious metals.
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Head Diameter – 1.40 mm:
Ideal for moderate-detail work in gem settings, bezels, and fine sculpting in metals like gold, silver, and platinum.
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Standardized Shank – 3/32" (2.38 mm):
Universally compatible with most rotary tools, flex shafts, micromotors, and Dremel-style handpieces.
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Optimal Bur Length – 1-3/4" (44.5 mm):
Long enough for excellent visibility and maneuverability without sacrificing control or precision.
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Cross-Cut Design:
Enhanced cutting efficiency and smoother finishes on various materials, including precious metals, brass, and wax.
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Versatile Applications:
Ideal for stone setting, jewelry carving, engraving, cleanup work, and general metal shaping.
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German Craftsmanship:
Manufactured in Germany to rigorous quality standards—trusted by professional jewelers worldwide.
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Pack of 6:
Convenient set of six burs ensures you always have backups ready for frequent use or multi-station workflows.
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