The CMT 307.120.12 Dowel Drill 12 x 40 x 67mm LH is a precision boring tool engineered for clean, accurate blind-hole drilling in solid wood, chipboard, MDF, laminates, and coated panels. Built on a super-strength steel body with a tungsten carbide (HW) head, this left-hand rotation dowel drill delivers the flat-bottom bores and smooth bore walls that furniture manufacturers and cabinet makers depend on for consistent, high-quality dowel joinery. Whether you are running a multi-spindle CNC boring machine or a dedicated panel processing center, this 12mm diameter drill is designed to produce repeatable results across high-volume production environments.

Key Features

• Super-strength steel body with HW (tungsten carbide) head - the hard-wearing carbide head maintains cutting edge sharpness through demanding production cycles, reducing downtime for tool changes and regrinding intervals.
• Precision balanced centre point - keeps the drill accurately positioned on entry, preventing walk or drift and ensuring each bore is located exactly where required for tight-tolerance dowel alignment.
• 2 HW precision ground cutting edges (Z2) - the twin carbide cutting edges produce flat-bottom blind holes with consistent depth and diameter, critical for flush-fitting dowel connections in panel and furniture work.
• 2 negatively ground spurs (V2) - the negatively ground spur geometry severs wood fibres cleanly at the bore perimeter before the cutting edges remove material, eliminating tearout and producing clean bore walls even in laminated and coated surfaces.
• Left-hand (LH) rotation - matches the spindle direction on left-hand boring units common in multi-spindle CNC boring machines and panel processing centers, ensuring the drill is driven correctly without slippage or loosening at the shank.
• 8 x 20mm parallel shank - the standardised shank diameter and length seats securely in compatible boring machine chucks and adapters, providing stable drive transmission and minimising runout during high-speed boring.
• 40mm cutting height with 67mm total length (medium series) - the extended cutting height accommodates deeper blind holes needed in thicker panel applications, giving more flexibility for furniture panel layouts without tool changes.

Why This Product

• Left-hand rotation and a standardised 8 x 20mm shank make this drill a direct fit for the LH spindle positions on multi-spindle CNC boring machines and panel processing centers, eliminating the need for adapters or workarounds in mixed-spindle boring heads.
• Negatively ground carbide spurs combined with precision ground HW cutting edges mean that laminated panels, MDF, and coated boards bore cleanly without surface chipping or tearout - protecting finished surfaces and reducing post-processing rework.
• The 40mm cutting height provides a deeper boring capacity than short-series alternatives, making this drill well suited for thicker furniture panels and cabinet carcasses where dowel depth is critical for joint strength.
• A precision balanced centre point and twin carbide cutting edges working together deliver consistently accurate bore positioning and flat-bottom hole geometry - the two things that matter most for reliable, gap-free dowel assembly on production furniture lines.

Specifications

• Manufacturer Part Number: 307.120.12
• Brand: CMT Orange Tools
• Description: Dowel Drill 12 x 40 x 67mm LH
• Diameter: 12mm
• Cutting Height: 40mm
• Total Length: 67mm
• Shank: 8 x 20mm
• Rotation: Left-hand (LH)
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (tungsten carbide)
• Body Material: Super-strength steel

Approved Applications

• Blind hole drilling for dowel connections
• Panel drilling in furniture manufacturing
• Cabinet making and carcass assembly
• Boring in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels
• Multi-spindle CNC boring machine operations
• CNC boring center and panel processing center production lines