 |
 |
 |
|
Busch Burr 77A Pearl Drill 1.80mm — a preferred choice among professional jewelers, delivering precision and high-quality performance to prevent chipping and produce smooth, clean holes in delicate materials such as pearls, coral, and soft stones. Founded in 1905, Busch is a globally recognized leader in manufacturing high-precision rotary tools and burs, trusted for their durability and exacting craftsmanship in jewelry making.
These Busch® Burs Pearl Drills feature a smooth flat head design with a 1.80mm diameter, made from premium hardened tungsten vanadium steel to ensure longevity and consistent sharpness. The 4.2mm working head depth enables accurate drilling and hole enlargement without damaging the delicate nacre or surrounding materials.
Compatible with a variety of rotary tools including pendant drills, micromotors, flex shafts, and pin vices, these burs provide jewelers with excellent control and precision.
For optimal results, pearls should be securely held in a pearl vice or carefully grasped with fingers wrapped in protective tape to prevent slipping. Drilling is best performed underwater or with a lubricant to avoid overheating and discoloration of the pearls.
Busch® Burs are renowned for their smooth finish, fine detailing capability, and long-lasting performance, making them an essential tool in any jeweler’s workshop.
- Brand: Busch®
- Type: Pearl Drill Bur
- Model: 77A Pearl Drill
- ISO Number: #018
- Shank Diameter: 3/32" (approximately 2.34mm tapered)
- Size: 1.80mm diameter, 4.2mm working head depth
- Material: Premium high-quality hardened tungsten vanadium steel
- Application: Ideal for jewelry making, pearl drilling, and drilling other delicate materials
About this Item:
Busch® burs are precision-engineered from premium tungsten vanadium steel, offering exceptional durability and long-lasting sharpness. Their fine, evenly spaced teeth and smooth cutting action provide flawless finishes, making them perfect for intricate jewelry detailing and repair work. Designed for reliable, low-speed operation, these burs deliver smooth, chip-free holes in pearls and other fragile materials.
How to Use:
Securely attach the bur to a compatible rotary tool such as a flex shaft, pendant drill, or Dremel. Apply gentle, steady pressure during drilling. For enhanced performance and to extend the bur’s lifespan, consider using a lubricant like Busch Lube-Stik or drilling under water to reduce heat buildup.
Safety Information:
Always wear protective eyewear when operating rotary tools and burs. After use, clean the bur gently with a soft cloth and mild soap to maintain sharpness and prevent corrosion.
|
|
|
 |
|
 |
|