CMT 311.030.21 Dowel Drill - 3 x 18 x 70mm, Right-Hand Rotation is a solid carbide boring bit engineered for high-precision dowel boring in furniture manufacturing, cabinet making, and panel processing applications. Built entirely from premium super-micrograin carbide, this 3mm diameter drill delivers clean, flat-bottomed blind holes in hardwood, MDF, particle board, chipboard, and veneered composites - making it a reliable choice for both multi-spindle CNC boring machines and high-speed production boring units. The 2-flute, 2-spur geometry and 18mm cutting height in a 70mm overall length make this bit well-suited for demanding industrial boring cycles where hole quality and tool longevity are critical.

Key Features

• Solid Super-Micrograin Carbide Construction (HWM) - the entire body is made from premium-grade carbide sourced from Luxembourg, delivering exceptional wear resistance and supporting an almost infinite number of resharpenings for long-term cost efficiency in high-production environments.
• 2 Curved, Negatively Ground Spurs (V2) - the unique spur geometry scores the bore perimeter cleanly before material removal begins, producing bore walls with no rough edges or tearout - critical for quality joinery in veneered panels and fine woodworking.
• Centre-Point Balanced Tip - the balanced centre point keeps the drill accurately on-axis during entry, reducing drift and ensuring repeatable hole placement across multi-spindle boring runs on CNC routers and panel processing centers.
• Plunge Edge Runs to Centre - reduces drilling resistance as the bit enters the material, increasing production speed and reducing heat buildup during continuous boring cycles.
• Cylindrical Head - Oversized vs. Traditional Tips - the larger cylindrical head is highly resistant to prolonged use, extending the interval between sharpenings and reducing downtime on production lines.
• 2 Cutting Edges (Z2) with 2 Spiral Flutes - the twin-flute spiral design efficiently evacuates chips during blind hole drilling, keeping the bore clean and reducing the risk of re-cutting debris that degrades hole quality.
• 10 x 40mm Parallel Shank with Driving Flat and Adjustable Screw Length - the parallel shank format is compatible with standard multi-spindle boring machine chucks and CNC boring centers, enabling straightforward tool changes and secure seating.
• Right-Hand (RH) Rotation - compatible with the majority of industrial boring units and CNC routers configured for standard right-hand spindle rotation.
• Extreme Sharpening Rating - rated for extreme sharpening cycles, meaning this solid carbide unit can be reground repeatedly without losing performance, reducing total cost of ownership compared to non-resharpable alternatives.

Why This Product

• Woodworkers and production shops working with difficult composites like particle board, MDF, and veneered panels need a boring bit that produces clean, tight-tolerance holes without splintering the face - the negatively ground curved spurs on this CMT dowel drill address that requirement directly, eliminating rough edges at the bore entry.
• For high-speed CNC boring centers and multi-spindle machines running continuous production cycles, solid carbide construction means the bit maintains cutting geometry far longer than alternatives, reducing the frequency of tool changes and the associated downtime.
• The solid carbide body supports repeated resharpenings, making this a cost-effective long-term tool investment for shops that maintain their own grinding equipment and want to maximize tool life across thousands of bore cycles.
• At 3mm diameter with an 18mm cutting height and 70mm total length, this bit covers blind hole dowel boring requirements where a standard-length drill cannot reach - useful in deep-panel furniture joinery and cabinet construction where precise depth and bore geometry matter.

Specifications

• Manufacturer Part Number: 311.030.21
• Brand: CMT Orange Tools
• Diameter: 3mm
• Cutting Height: 18mm
• Total Length: 70mm
• Shank: 10 x 40mm
• Number of Teeth: 2
• Number of Spurs: 2
• Rotation: Right-Hand (RH)
• Blade Material: HWM (Super-Micrograin Carbide)
• Sharpening: Extreme

Approved Applications

• Blind hole dowel boring for dowel joint connections
• Panel drilling in furniture manufacturing and cabinet making
• Boring in hardwood and softwood
• Drilling in particle board, MDF, and HDF
• Processing veneered panels and coated panels
• High-speed multi-spindle CNC boring machine operations
• CNC router boring center applications
• Panel processing centers and boring machines with adapters or chucks