CMT 310.030.21 Dowel Drill - 3 x 18 x 57.5mm, Right-Hand Rotation is a solid carbide boring bit engineered for precise, clean dowel hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Built entirely from premium super-micrograin carbide sourced from Ceratizit in Luxemburg, this 3mm diameter drill delivers exceptional bore quality and extended tool life across hardwood, MDF, particle board, veneered panels, and difficult composite materials. Its compact 57.5mm overall length and 10 x 25mm parallel shank make it compatible with multi-spindle CNC boring machines, boring centers, and high-speed panel processing equipment where repeatable accuracy and long-lasting performance are critical.

Key Features

• Solid super-micrograin carbide construction (HWM) - the entire drill body is made from premium Ceratizit carbide, delivering superior hardness and wear resistance so the bit stays sharp significantly longer between resharpenings compared to high-speed steel alternatives.
• 2 curved, negatively ground spurs (V2) - the unique spur geometry severs wood fibers cleanly before the main cutting edges engage, producing exceptionally clear bore walls with no rough edges or tearout - critical for high-quality dowel joinery in veneered and coated panels.
• Centre-point balanced tip design - the balanced centre point ensures accurate hole positioning on entry, reducing bit wander and improving repeatability across multi-spindle CNC setups and automated boring centers.
• Plunge edge running to the centre of the bit - this design reduces drilling resistance during plunge cuts, increasing production speed and reducing heat buildup, which translates to less wear and longer service intervals.
• 2 cutting edges and 2 spiral flutes (Z2) - the twin-flute geometry efficiently evacuates chips from blind holes, preventing clogging and maintaining consistent bore quality during high-speed, continuous-duty operation.
• Parallel shank with driving flat (10 x 25mm) - the driving flat prevents shank slippage under torque load, maintaining precise bit registration in both manual and CNC chuck systems.
• Extreme sharpening rating - the solid carbide construction supports an almost infinite number of resharpenings, meaning the bit can be reconditioned repeatedly rather than discarded, reducing long-term tooling costs.
• Right-hand (RH) rotation - matched to standard boring machine spindle direction, ensuring correct chip evacuation and spur engagement for clean, flat-bottom blind holes.

Why This Product

• Furniture and cabinet manufacturers working with veneered panels, MDF, and particle board need a boring bit that produces chip-free, flat-bottom holes without surface tearout - the negatively ground curved spurs on this bit are specifically designed for exactly that outcome, protecting finished panel faces during high-volume production runs.
• CNC boring centers and high-speed multi-spindle machines demand tooling that can withstand prolonged continuous use without dimensional drift - the oversized cylindrical head and solid carbide body of this bit are built to resist wear under those demanding duty cycles.
• Shops that resharpen their tooling to manage costs benefit directly from the solid carbide construction, which allows repeated reconditioning without compromising the tool's structural integrity, unlike tipped or brazed designs.
• At just 3mm diameter with an 18mm cutting height and 57.5mm total length, this bit fills a specific small-diameter niche in dowel drilling applications where precision bore sizing is essential for tight-fitting dowel joints in hardwood and composite assemblies.

Specifications

• Manufacturer Part Number: 310.030.21
• Brand: CMT Orange Tools
• Diameter: 3mm
• Cutting Height: 18mm
• Total Length: 57.5mm
• Shank: 10 x 25mm
• Number of Spurs: 2
• Number of Cutting Edges: 2
• Rotation: Right-hand (RH)
• Blade Material: HWM (Super-Micrograin Carbide)
• Sharpening Rating: Extreme

Approved Applications

• Blind hole drilling for dowel connections and dowel joinery
• Panel drilling in furniture manufacturing
• Cabinet making and case goods production
• High-speed boring unit applications
• CNC router and CNC boring center operations
• Multi-spindle boring machine use