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The Diamond Bur 0.9 x 4mm Coarse is a premium rotary tool designed for accurate shaping, polishing, and engraving on hard materials such as metal, stone, and glass. Its sharp, coarse diamond tip provides fast and efficient material removal while allowing for excellent precision and control, making it ideal for detailed craftsmanship and heavy-duty applications alike.
Built with high-quality diamond grit electroplated on a durable shank, this bur offers superior durability and long-lasting performance, even under demanding use. Whether you're working on jewelry, stone carving, glass engraving, or metalworking, this versatile tool delivers reliable results every time.
Key Benefits:
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Superior Diamond Grit Quality:
Ensures aggressive cutting action and exceptional wear resistance for prolonged tool life.
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Sharp Coarse Tip:
Enables fast material removal while maintaining a smooth, controlled finish on intricate surfaces.
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Versatile Use:
Perfect for precision work on metals, stones, glass, ceramics, and more.
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Compatible with Most Rotary Tools:
Easily fits standard rotary handpieces, including Dremel®, micromotors, and flex shafts for versatile application.
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Ergonomic Design:
Balanced construction minimizes vibration, providing comfort and control during extended use.
Head Size (Diameter x Length): 0.9mm x 4mm
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Shank Diameter: 3/32″ (2.35mm)
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Shank Material: Stainless Steel (corrosion-resistant)
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Total Length: Approximately 44.5mm (1-3/4″)
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Diamond Grit: Coarse (approx. 80 grit)
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Bonding Method: Electroplated diamond abrasive for consistent grit coverage and durability
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Maximum Recommended RPM: Up to 60,000 RPM (depending on rotary tool compatibility)
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Compatible Rotary Tools:
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Suitable Materials:
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Metals (steel, aluminum, brass, copper)
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Stone and gemstones
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Glass and ceramics
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Hard plastics and composites
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Usage Conditions: Suitable for both wet and dry use; wet use recommended to reduce heat and prolong tool life
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Durability: High resistance to wear, breakage, and corrosion for extended lifespan
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Balance: Precision-balanced shaft for smooth, vibration-free operation
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Maintenance: Easy cleaning with soft wire brush or ultrasonic cleaner recommended
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Features
High-Quality Diamond Tip: Sharp and precision-cut diamond particles are electroplated onto the tip, providing exceptional hardness and resistance to wear, ensuring long-lasting sharpness even with frequent use.
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Aggressive Coarse Grit: Designed for rapid material removal, the coarse grit enables efficient grinding, shaping, and smoothing of hard surfaces while maintaining control and precision.
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Versatile Material Compatibility: Perfect for use on metal, stone, glass, ceramics, and hard plastics, making it suitable for a wide range of applications including jewelry making, glass engraving, and stone carving.
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User-Friendly Design: Easy to operate with standard rotary tools; no specialized training required, making it ideal for both professionals and hobbyists.
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Durable Stainless Steel Shank: Corrosion-resistant shank construction provides enhanced strength and stability during high-speed operation, reducing the risk of breakage.
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Heat-Resistant Construction: Can withstand high-speed rotary use without losing shape or performance, reducing downtime and increasing productivity.
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Low Maintenance: Simple to clean and maintain; can be refreshed with a soft wire brush or ultrasonic cleaner to prolong abrasive effectiveness.
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Compact and Precise: Small 0.9mm head size allows for intricate detailing and access to tight spaces, perfect for fine engraving and delicate shaping.
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