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Busch® Burs - 90° Hart, ISO #013 Fig. 156C, 1.30 mm are precision-engineered from high-grade tungsten vanadium steel, delivering exceptional durability and smooth, accurate cuts. Trusted by professional jewelers worldwide, these German-made burs are known for their consistent performance and long-lasting sharpness. The 90° Hart angle is ideal for intricate jewelry applications such as prong shaping, edge refinement, and fine finishing work. With a 1.30 mm head diameter, these burs offer excellent control for detailed tasks, while the 3/32" (2.38 mm) shank fits most standard rotary tools, including Dremel® and flex shafts.
For best results, use with a premium lubricant to reduce friction and extend tool life. Safe maximum operating speeds are provided on the packaging. Clean with a soft cloth after each use to preserve sharpness. Always wear appropriate eye protection during operation.
Brand: Busch®
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Product Type: 90° Hart Bur
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ISO Number: #013
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Figure: 156C
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Head Diameter: 1.30 mm
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Shank Diameter: 3/32" (2.38 mm) – fits standard rotary tools
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Total Length: Approximately 1-3/4" (44.5 mm)
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Cut Type: Cross-cut (for smooth and controlled material removal)
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Shape: Cylinder Square
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Material: Premium tungsten vanadium steel for maximum durability
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Pack Quantity: 6 burs per package
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Country of Manufacture: Germany
Additional Information:
Busch® Burs are highly regarded in the jewelry industry for their precision engineering and long-lasting cutting performance. The 90° Hart design and cross-cut pattern ensure consistent, clean cuts ideal for fine detailing, prong shaping, and precision carving in metals and other materials.
The burs are manufactured with evenly spaced, machine-cut teeth that reduce chatter and deliver a smoother finish. Each bur is quality-tested to meet the exacting standards of professional jewelers and metalsmiths.
How to Use:
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Insert securely into a rotary tool, Dremel®, or flex shaft with a compatible collet.
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Apply light, consistent pressure during use to avoid overheating or dulling the bur.
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For optimal performance and tool longevity, apply a quality lubricant such as Busch® Lube-Stik during operation.
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Operate within the recommended speed settings as indicated on the bur packaging.
Care & Safety:
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Wear protective eyewear when operating rotary tools with burs.
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Clean burs with a soft cloth after each use to prevent residue buildup and maintain sharpness.
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Store in a dry, secure location to avoid corrosion or damage.
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Do not exceed safe RPM limits, which may vary depending on bur size and material.
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Features
Premium-Grade Steel: Made from high-quality tungsten vanadium steel for superior hardness, wear resistance, and extended tool life.
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Precision-Machined Teeth: Uniformly spaced and engineered for smooth, chatter-free cutting across a variety of metals and materials.
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90° Hart Angle Design: Enables precise control for intricate jewelry tasks like prong shaping, edge refinement, and precision engraving.
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Accurate Head Size: 1.30 mm diameter, ideal for detailed stone setting and fine metalwork in tight spaces.
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Universal Compatibility: Standard 3/32" (2.38 mm) shank fits most rotary tools, including Dremel®, Foredom®, and flex shafts.
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Comfortable Handling Length: Approx. 1-3/4" (44.5 mm) total length ensures stability and ease of use in handpieces.
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Cross-Cut Geometry: Provides clean, even cuts and minimizes debris buildup for a smoother finish and less tool drag.
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Multi-Application Versatility: Excellent for gem setting, sculpting, engraving, carving, deburring, and precision polishing.
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German Engineering Excellence: Manufactured in Germany with strict quality control to ensure consistency and reliability.
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Cost-Effective Pack Size: Comes in a convenient pack of 6 burs, ideal for professionals and high-volume users.
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