CMT 306.090.12 Dowel Drill - 9 x 30 x 55.5mm Left-Hand Rotation is a precision-engineered boring tool from CMT, built for high-speed blind hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Designed with a hardened tungsten carbide (HW) cutting head and a balanced centre point, this left-hand rotating dowel drill delivers consistently clean, flat-bottomed bores in solid wood, chipboard, MDF, and coated panel materials. Whether installed in a multi-spindle CNC boring machine or a standard boring centre, this tool is engineered to perform at demanding production speeds without sacrificing hole quality.

Key Features

• Super-strength steel body with HW (tungsten carbide) head - provides exceptional wear resistance during high-cycle CNC production, extending tool life significantly compared to standard steel alternatives.
• Precision balanced centre point - ensures accurate hole positioning on entry, reducing workpiece drift and improving bore consistency across high-volume panel runs.
• 2 HW precision ground cutting edges (Z2) - dual carbide-tipped flutes produce smooth bore walls and a clean flat bottom, which is critical for tight-fitting dowel joints in furniture and cabinet assembly.
• 2 negatively ground spurs (V2) - the negative grind geometry severs wood fibres cleanly at the perimeter of the hole before material is removed, minimising tearout and chipping on coated, laminated, and veneered panel surfaces.
• Left-hand (LH) rotation - engineered specifically for left-hand spindle positions on multi-spindle boring machines, ensuring the correct cutting direction and preventing unintended loosening of the tool in its chuck or adapter.
• 8 x 20mm shank - a standardised parallel shank format that is compatible with a wide range of CNC boring centres and multi-spindle heads, making tooling changeover straightforward.
• 30mm cutting height - provides ample depth capacity for standard blind hole dowel connections used in furniture panel assembly, accommodating common dowel lengths.

Why This Product

• The negatively ground spurs and precision ground carbide cutting edges work together to produce chip-free entry and flat-bottomed blind holes - exactly what is needed for clean dowel connections in laminated and coated panels where surface finish at the bore opening is visible or structurally important.
• Left-hand rotation is a specific engineering requirement for machines with LH spindles - using a right-hand drill in an LH spindle position produces poor cuts and accelerated tool wear. This drill is purpose-built for that application, eliminating that problem entirely.
• The HW (tungsten carbide) cutting head is designed to withstand the abrasive demands of chipboard, MDF, and HDF - materials that rapidly dull standard steel tooling - keeping production lines running longer between tool changes.
• With a 9mm diameter and 55.5mm overall length on a compact 8 x 20mm shank, this drill fits the dimensional standards common to multi-spindle CNC boring machines used in panel furniture production, reducing the need for adapters or custom setups.

Specifications

• Manufacturer Part Number: 306.090.12
• Brand: CMT Orange Tools
• Diameter: 9mm
• Cutting Height: 30mm
• Total Length: 55.5mm
• Shank: 8 x 20mm
• Rotation: Left-Hand (LH)
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Head Material: HW (Tungsten Carbide)
• Body Material: Super-strength steel
• Tool Type: Dowel Drill

Approved Applications

• Blind hole drilling for dowel connections in furniture panel assembly
• Panel drilling in chipboard, MDF, HDF, and coated panels
• Boring in solid hardwood and softwood
• Drilling in plywood and laminated panels
• High-speed CNC boring centre production runs
• Cabinet making and furniture manufacturing
• Multi-spindle boring machine operations requiring left-hand rotation tooling