CMT 310.064.22 Dowel Drill 1/4" x 22 x 57.5mm Left-Hand by CMT is a solid carbide boring bit engineered for high-precision blind hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Built entirely from premium super-micrograin carbide sourced from Ceratizit, this left-hand rotation dowel drill delivers exceptionally clean bores with flat bottoms and no rough edges - making it the right choice for dowel joinery, panel drilling, and CNC boring operations on hardwood, MDF, particle board, and veneered composites. The short-series 57.5mm overall length and 10x27mm parallel shank with driving flat suit it for use in multi-spindle CNC boring machines and high-speed boring units where consistent, repeatable results matter.

Key Features

• Solid super-micrograin carbide construction (HWM) - the entire bit is made from premium Ceratizit carbide, providing exceptional wear resistance and allowing an almost infinite number of resharpenings, lowering long-term tooling cost significantly.
• 2 curved, negatively ground spurs (V2) - produce exceptionally clean bore walls with no rough edges or tearout, which is critical for quality dowel connections in finished furniture and cabinet panels.
• Centre-point balanced tip design - ensures accurate bit entry and reduces walking on the workpiece surface, improving hole-location precision in multi-spindle and CNC boring setups.
• Plunge edge running to the centre of the bit - reduces drilling resistance and increases production speed, letting operators run at higher feed rates without sacrificing bore quality.
• Left-hand (LH) rotation - matches the spindle direction requirements of left-hand boring heads on multi-spindle machines and CNC boring centers, ensuring correct chip ejection and clean hole entry.
• 2 flutes and 2 cutting edges (Z2) - provide balanced cutting forces and efficient chip clearance, which keeps heat low and extends edge life between sharpenings.
• 10x27mm parallel shank with driving flat - locks securely in boring machine chucks and adapters, preventing bit slippage under high-speed, repetitive production conditions.
• Extreme sharpening grade - the bit is ground to an extreme sharpness level, delivering clean entry and exit in difficult composites such as particle board, MDF, and veneered wood where surface quality is non-negotiable.

Why This Product

• For shops drilling dowel holes in veneered panels, MDF, or coated boards where tearout is unacceptable, the negatively ground curved spurs produce bore edges clean enough to assemble without sanding or touch-up.
• The solid carbide body can be resharpened an almost infinite number of times - unlike brazed-tip alternatives that can separate under stress - giving production operations a longer-lived, safer boring tool.
• With a 1/4" diameter, 22mm cutting height, and 57.5mm overall length in the short series, this bit is dimensioned specifically for standard dowel hole depths on furniture and cabinet panels, reducing setup adjustments on boring machines.
• Left-hand rotation makes this bit a direct fit for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, eliminating the need for workarounds or reversed chuck adapters.

Specifications

• Manufacturer Part Number: 310.064.22
• Brand: CMT Orange Tools
• Diameter: 1/4"
• Cutting Height: 7/8"
• Total Length: 57.5mm
• Shank: 10x27mm
• Number of Flutes: 2
• Number of Teeth: 2
• Number of Spurs: 2
• Rotation: LH (Left-Hand)
• Blade Material: HWM (Solid Super-Micrograin Carbide)
• Sharpening Grade: Extreme

Approved Applications

• Blind hole drilling for dowel connections
• Panel drilling in furniture and cabinet manufacturing
• Drilling in hardwood and softwood
• Drilling in particle board and chipboard
• Drilling in MDF and HDF
• Drilling in veneered wood and coated panels
• Drilling in difficult composites and laminates
• High-speed boring unit operations
• CNC router and CNC boring center applications