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The Diamond Bur 7x12mm Medium/Fine is a powerful, heavy-duty carving and shaping tool designed for precision and performance across a range of tough materials, including stone, metal, glass, and ceramic. With its Medium/Fine diamond grit, this bur offers the perfect balance between fast material removal and smooth finishing, making it ideal for both rough shaping and refined detailing. Its extended stainless steel shank provides exceptional reach, stability, and control—perfect for larger projects that demand accuracy and durability.
Key Benefits:
- Heavy-Duty Performance: Designed for demanding carving, grinding, and shaping applications on hard materials.
Efficient Material Removal: Medium/Fine grit ensures quick stock removal while maintaining surface precision. - Durable Construction: Electroplated with industrial-grade diamond particles on a stainless steel shank for long-lasting performance.
- Extended Reach: 7x12mm head size with a long shank allows greater access to deep or complex areas.
- Smooth Operation: Balanced design reduces vibration for improved accuracy and operator comfort.
- Versatile Applications: Suitable for stone, metal, glass, ceramic, and other dense materials used in jewelry, sculpture, and restoration work.
- Universal Compatibility: Fits most rotary tools, including Dremel®, Proxxon®, Foredom®, and similar systems.
- Precision Finishing: Ideal for refining shapes, deburring edges, and adding fine detail to large-scale pieces.
- Cool and Clean Cutting: Efficient grit layout minimizes heat buildup, extending tool and material life.
- Professional-Grade Reliability: Trusted by jewelers, sculptors, lapidary artists, and metalworkers for consistent, high-quality results.
Product Name: Diamond Bur 7x12mm Medium/Fine – Heavy-Duty Carving Tool
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Material: Stainless steel shank with electroplated diamond coating
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Shank Diameter: 3/32″ (2.35 mm)
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Total Length: 1-3/4″ (44.5 mm)
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Head Size (Diameter × Length): 7 × 12 mm
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Grit Rating: Medium/Fine (120–140)
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Coating Type: Single-layer nickel electroplated industrial diamond grit
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Diamond Type: Synthetic industrial-grade diamond particles
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Hardness (Diamond): 9.5 on the Mohs scale
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Maximum Operating Speed: Up to 35,000 RPM (depending on material and rotary tool)
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Recommended Working Speed: 10,000–25,000 RPM for best performance and control
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Tool Compatibility: Fits most rotary tools such as Dremel®, Proxxon®, Foredom®, Grobet®, and similar systems
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Cooling Method: Can be used dry or with light water/oil lubrication to extend tool life
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Application Materials: Stone, metal, glass, ceramic, shell, resin, and composite materials
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Shank Material: Precision-ground stainless steel, corrosion- and wear-resistant
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Bond Type: Nickel-based electroplating ensures strong diamond adhesion
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Weight (Approx.): 3.5–4 g per piece
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Dimensional Tolerance: ±0.05 mm (shank and head diameter)
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Operating Temperature: Optimal below 80°C for prolonged diamond retention
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Packaging Options: Individually blister-packed or available in assorted sets
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Quality Standard: Manufactured to ISO 9001:2015 quality control standards
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Features
Premium Diamond Coating: High-quality diamond particles electroplated onto stainless steel ensure superior durability, sharpness, and long service life.
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Medium/Fine Grit (120–140): Provides the perfect balance of efficient material removal and smooth surface finishing.
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Heavy-Duty Performance: Designed for high-load carving, grinding, and shaping of dense materials like stone, metal, glass, and ceramic.
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Large 7x12mm Head: Offers excellent control and coverage for larger projects or deeper shaping applications.
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Precision Balanced: Engineered for low vibration and smooth operation, improving accuracy and comfort during extended use.
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Extended Reach: Longer head and shank design allow access to hard-to-reach areas and detailed contours.
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Versatile Applications: Ideal for jewelry making, stone carving, lapidary work, metal engraving, and restoration projects.
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Universal Compatibility: Fits most rotary tools including Dremel®, Proxxon®, and Foredom® systems.
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Cool Cutting Efficiency: Open diamond pattern helps reduce heat buildup, extending both tool and material life.
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Corrosion-Resistant Build: Stainless steel shank resists rust and maintains performance even under demanding conditions.
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Professional Quality: Trusted by jewelers, sculptors, metalworkers, and artisans for consistent precision and reliability.
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