CMT Dowel Drill 10 x 35 x 70mm Left-Hand Rotation is a solid carbide boring bit engineered for high-precision dowel hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Built from premium super micrograin carbide, this left-hand (LH) rotation bit delivers exceptionally clean bores in hardwood, MDF, particle board, veneered panels, and other demanding composite materials. Its 70mm overall length and 35mm cutting height make it especially well suited for deeper boring requirements on multi-spindle CNC boring machines and high-speed boring centers where consistent, chip-free results are critical.

Key Features

• Premium super micrograin carbide construction - the solid carbide body (material grade HW) provides exceptional hardness and wear resistance, allowing an almost infinite number of resharpenings and extending tool life far beyond conventional carbide-tipped alternatives.
• Curved, negatively ground spurs (2 spurs) - the unique spur geometry produces exceptionally clear bore walls with no rough edges or tearout, delivering furniture-grade hole quality on every pass without secondary cleanup.
• Plunge edge runs all the way to the centre of the bit - reduces drilling resistance and increases production speed, so boring cycles are faster and spindle load is lower across long production runs.
• Centre point balanced tip design - promotes accurate bit entry and straight bore alignment, minimising hole deviation even at high spindle speeds on CNC routing and boring equipment.
• Cylindrical head larger than traditional tips - the oversized cylindrical head resists wear during prolonged production use, maintaining bore diameter accuracy longer between tool changes or resharpenings.
• Solid carbide unit construction (no brazed joint) - eliminates the risk of tip separation found in tipped tools, providing an extra safety margin when operating at the elevated speeds typical of CNC boring centers.
• Left-hand rotation (LH) - engineered specifically for left-hand spindle positions on multi-spindle boring machines, ensuring proper chip evacuation direction and clean bore entry on the correct face of the panel.
• 10 x 30mm parallel shank with 2 flutes - the standardized shank dimensions allow direct mounting in common boring machine chucks and adapters without custom tooling, reducing setup time.

Why This Product

• For shops processing large volumes of panel furniture or cabinet carcasses, the solid carbide body supports repeated resharpenings - meaning lower cost per hole over the tool's life compared to single-use or limited-resharpening alternatives.
• The negatively ground curved spurs and centre-balanced tip work together to produce flat-bottom, clean-walled dowel holes in difficult materials like particle board, MDF, and veneered wood - materials that notoriously cause tearout with inferior drill geometry.
• Rated for excellent performance on high-speed boring units and CNC routers, this bit is purpose-built for industrial production environments where cycle time and hole quality both matter - not just occasional benchtop use.
• The left-hand designation makes this the correct tool for LH spindle positions in multi-spindle boring head configurations, ensuring proper rotation direction for clean entry faces without requiring a separate adapter or reversal setup.

Specifications

• Manufacturer Part Number: 311.100.42
• Brand: CMT Orange Tools
• Diameter: 10mm
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 30mm
• Number of Spurs: 2
• Number of Flutes: 2
• Rotation: Left-Hand (LH)
• Material: HW (Solid Carbide - Super Micrograin)

Approved Applications

• Dowel hole drilling for dowel joint connections
• Panel drilling in furniture manufacturing
• Cabinet making and carcass assembly boring
• Blind hole boring in hardwood and solid wood
• Drilling in particle board, MDF, HDF, and veneered wood
• High-speed multi-spindle boring machine operations
• CNC router and CNC boring center applications
• Difficult composite panel processing