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The Busch® Burs - Twist Drills, Fig. 77 - 0.70mm (ISO #007) deliver exceptional precision and durability, making them indispensable for professional jewelers and artisans. Crafted from premium tungsten vanadium steel, these twist drills measure 0.70mm (0.0276") in diameter, providing outstanding strength and a long-lasting cutting edge. Their precision-machined, uniformly spaced flutes ensure smooth, accurate drilling with minimal material damage.
Featuring a 3/32" diameter shank approximately 1.75" long, these burs are compatible with most rotary tools such as flex shafts and Dremels. For optimal cutting performance and tool longevity, use a lubricant like Lube-Stik. The recommended operating speed ranges between 1,400 and 10,000 rpm, with ANSI guidelines providing exact speed limits.
Manufactured in Germany, these burs are designed to deliver flawless finishes and consistent results, whether used for intricate jewelry work, stone setting, or metal repairs. Each pack contains 6 high-quality twist drills, perfect for enhancing your toolkit with professional-grade tools.
- Brand: Busch®
- Diameter: 0.70mm (0.0276”)
- Figure Number: 77
- Material: Tungsten Vanadium Steel
- Package Contents: 6 twist drills
- Shank Size: 3/32” diameter, 1.75” length
- Shape: Twist Drill
- ISO Classification: #007
- Material Quality: High-grade steel for
precision and durability
- Quantity: 6 drills per pack
- Country of Origin: Germany
- Applications: Designed for use on metals,
gemstones, and a variety of other materials.
About this Item:
Busch® burs are expertly crafted from premium tungsten vanadium steel, engineered to maintain smooth, even cuts and deliver a flawless finish. Their fine teeth and precise cutting edges are ideal for detailed jewelry work, ensuring reliable performance even at low speeds.
How to Use:
Safety Information:
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Always wear protective eyewear when using Busch® burs.
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After use, clean the burs with a soft cloth and mild soap to maintain sharpness and tool quality.
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Features
Tungsten Vanadium Steel: Exceptional strength and long-lasting sharpness for reliable, durable use.
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Uniform Flutes: Precision-machined flutes ensure smooth, accurate cutting and efficient chip removal.
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Size & Shape: 0.70mm diameter, Fig. 77 twist drill for detailed and delicate work.
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Shank Size: Standard 3/32” diameter with approximately 1.75” length fits most rotary tools including flex shafts and Dremels.
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Speed Range: Recommended operating speed of 1,400 - 10,000 rpm to optimize cutting efficiency and prevent overheating.
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Made in Germany: Crafted with meticulous German engineering for superior wear resistance and consistent performance.
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Pack of 6: Convenient multi-pack ideal for professional jewelers, hobbyists, and metalworkers.
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Versatile Applications: Suitable for drilling metals, gemstones, ceramics, and other hard materials in jewelry making, watchmaking, and precision crafting.
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Reduced Vibration: Engineered to minimize vibration and noise during operation, improving comfort and control for detailed work.
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Lubricant Recommended: Using lubricants such as Lube-Stik helps reduce friction, extend tool life, and maintain cutting precision.
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Corrosion-Resistant Finish: Special surface treatment helps resist rust and corrosion, maintaining sharpness over extended use.
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Easy Maintenance: Designed for straightforward cleaning and sharpening, ensuring consistent performance over time.
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