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The Busch® Cone Square Bur ISO #027 is a premium-quality rotary tool designed for high-precision jewelry work, including shaping, carving, engraving, and stone setting. Manufactured in Germany from durable tungsten vanadium steel, this bur delivers exceptional strength, wear resistance, and long-lasting cutting performance—making it a trusted tool for both professional bench jewelers and skilled hobbyists.
With a cutting diameter of 2.70mm (ISO #027) and a standard 3/32" shank, it fits most rotary handpieces, including flex shafts and Dremels. The cone square shape with uniformly spaced, precision-machined teeth ensures clean, consistent cuts with minimal vibration, ideal for achieving intricate detailing on metal, ceramic, or glass.
Whether you're working on delicate engraving, fine bezel shaping, or custom stone settings, this bur provides the control and accuracy required for flawless results.
Brand: Busch®
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Material: Tungsten carbide
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Shape: Cone Square
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ISO Number: #027
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Cutting Diameter: 2.70 mm
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Bur Length: 7.00 mm
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Cutting Angle (α): 6.0°
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Shank Diameter: 3/32" (2.35 mm) – Standard for most rotary tools
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Construction: Precision cross-cut teeth for smooth, clean finishes
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Pack Size: 1/2 Dozen (6 pieces)
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Applications:
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Compatibility: Fits flex shafts, micromotors, Dremels, and other rotary tools
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Country of Origin: Germany
How to Use:
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Secure the bur into your rotary tool or handpiece.
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Use light, steady pressure to maintain control.
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Apply lubricant (e.g., Busch Lube-Stik) to reduce heat and extend bur life.
Safety Tips:
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Always wear eye protection when operating rotary tools.
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Keep the bur clean after each use using mild soap and a soft cloth.
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Avoid excessive pressure to preserve tool sharpness and prevent damage.
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Features
High-Quality Construction: Made from premium tungsten vanadium steel for exceptional durability, strength, and long-lasting performance.
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Precision Cutting: Engineered with a sharp, accurate cutting edge that ensures clean, controlled shaping, engraving, and detailing with minimal burring.
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Versatile Application: Ideal for a wide range of jewelry-making tasks, including:
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Uniform Tooth Design: Precision-machined, evenly spaced teeth provide smooth cuts and a professional-grade finish with less effort.
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Available in Multiple Sizes: Ranging from 0.70 mm to 3.10 mm, including the ISO #027 (2.70 mm), to meet the needs of intricate or large-scale projects.
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Beginner-Friendly: Excellent control makes it suitable for both novice and professional jewelers.
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Universal Compatibility: Standard 3/32" (2.35 mm) shank fits most rotary tools, including Dremel®, Foredom®, and flex shafts.
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Cost-Effective Packaging: Comes in a 1/2 dozen (6-piece) pack, providing great value for busy workshops and studios.
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Enhanced Safety: Always wear protective eyewear during use. Clean the bur after use to maintain performance and prevent buildup.
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