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Since 1905, Busch has set the industry standard for high-precision rotary tools, offering durable and expertly crafted burs that jewelers worldwide trust. The Busch® Burs Pearl Drills 1.60mm (ISO #016) are designed to deliver exceptional precision and quality, making them the go-to choice for drilling delicate materials like pearls without chipping or cracking.
These burs feature a unique smooth flat head with a 1.60mm diameter, expertly machined from hardened tungsten vanadium steel. This construction ensures clean, soft-edged holes that preserve the integrity and beauty of pearls by avoiding damage to their delicate nacre. The burs offer a 4.2mm working head depth for consistent, controlled drilling whether creating new holes or enlarging existing ones.
The 2.34mm tapered shank is compatible with a wide range of rotary tools, including pendant drills, micromotors, flex shafts, and pin vices, allowing jewelers to maintain precise control during intricate work.
For best results, pearls should be securely held in a pearl vice or cushioned by fingers wrapped in protective tape. Drilling under water or with proper lubrication is recommended to prevent overheating, cracking, or discoloration.
Crafted for long-lasting performance, Busch® Burs are essential for any professional jeweler’s toolkit, enabling smooth finishes and fine detailing with ease and confidence.
- Brand: Busch®
- Type: Pearl Drill Bur
- Model: 77A Pearl Drill
- ISO Number: #016
- Shank Diameter: 3/32" (approx. 2.34mm tapered shank)
- Size: 1.60mm diameter, 4.2mm working head depth
- Material: High-quality hardened tungsten vanadium steel
- Application: Precision jewelry making, pearl drilling, bead drilling, and delicate material drilling
About this Item:
Busch® Burs Pearl Drills are manufactured from premium tungsten vanadium steel, known for its exceptional hardness and long-lasting sharpness. These burs are specifically designed to create clean, smooth, and soft-edged holes in fragile materials such as pearls, coral, and soft gemstones without causing chipping or cracking.
The 1.60mm diameter drill head offers precise control for both new hole drilling and enlarging pre-existing holes, while the 4.2mm working depth ensures consistent, controlled penetration. The 2.34mm tapered shank is compatible with most pendant drills, micromotors, flex shafts, Dremel tools, and pin vices, providing versatile use across professional jewelry workshops.
Busch burs feature finely cut teeth and a smooth flat head design to minimize vibration and stress during drilling, resulting in superior finish quality and reduced risk of damaging delicate surfaces.
How to Use:
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Secure the bur into a rotary tool with a compatible collet (e.g., flex shaft, micromotor, pendant drill, Dremel).
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Use gentle, consistent pressure during drilling to prevent overheating and material damage.
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Employ a lubricant like Busch Lube-Stik or drill under water to extend bur life and reduce heat buildup.
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Hold pearls carefully in a pearl vice or wrap fingers with protective tape to avoid slippage and damage.
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Clean burs after each use with mild soap and a soft cloth to maintain sharpness and performance.
Safety Information:
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Always wear protective eyewear during use to protect from flying debris.
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Store burs in a dry place to prevent corrosion and maintain cutting performance.
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Avoid excessive speed or pressure which can cause bur breakage or damage to the material.
Additional Features:
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Pack of 6 burs provides excellent value and convenience for frequent users or workshops.
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Trusted worldwide by professional jewelers for precision, durability, and smooth cutting action.
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Designed to work effectively at low to moderate speeds (approx. 1,400 to 10,000 RPM).
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Made in Germany under stringent quality controls ensuring consistent performance and longevity.
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Features
1.60mm Precision Drill Diameter
Engineered to produce clean, smooth, and soft-edged holes while preventing chipping in delicate materials like pearls, coral, and soft gemstones.
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Premium Hardened Tungsten Vanadium Steel
Crafted from high-quality tungsten vanadium steel alloy to ensure exceptional durability, sharpness retention, and resistance to wear.
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4.2mm Working Head Depth
Provides precise control over drilling depth for consistent, accurate hole sizing without compromising material integrity.
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Smooth Flat Head Design
Reduces vibration and material stress during drilling, minimizing the risk of cracking or surface damage on fragile organic materials.
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Standard 2.34mm Tapered Shank
Compatible with a wide range of rotary tools including pendant drills, micromotors, flex shafts, Dremel tools, and pin vices.
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Optimized for Low to Moderate Speeds
Delivers reliable performance at speeds ranging from approximately 1,400 to 10,000 RPM, reducing heat buildup and extending tool life.
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Pack of 6 Burs
Provides cost-effective supply for workshops and professionals requiring multiple burs for continuous or varied use.
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Made in Germany
Manufactured under strict quality control to meet professional standards in precision jewelry fabrication and repair.
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Recommended Use with Lubricants
Compatible with Busch Lube-Stik or water-based lubricants to prevent overheating and prolong bur lifespan.
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Ideal for Multiple Applications
Suitable for pearl drilling, bead hole enlargement, coral drilling, soft stone work, and other delicate material applications in jewelry making.
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Easy to Clean and Maintain
Simple cleaning with mild soap and soft cloth maintains sharpness and prevents corrosion.
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