CMT 306.070.12 Dowel Drill 7 x 30 x 55.5mm Left-Hand by CMT is a precision-engineered left-hand rotation boring tool built for high-speed blind hole drilling in panel processing and furniture manufacturing environments. Designed with a tungsten carbide (HW) tipped head, a balanced centre point, and negatively ground spurs, this 7mm dowel drill delivers clean, flat-bottom bores in solid wood, chipboard, MDF, laminates, and coated panels - making it a reliable choice for cabinetmakers, panel processors, and CNC operators who need consistent, repeatable results at production speeds.

Key Features

• HW (Tungsten Carbide) Tipped Head with Precision Balanced Centre Point - the carbide construction resists wear over extended production runs, and the balanced centre point keeps the bit tracking true at high spindle speeds, reducing hole wander and improving bore quality.
• 2 HW Precision Ground Cutting Edges (Z2) - two carbide cutting edges shear material cleanly on entry, producing smooth bore walls and minimizing tearout on chipboard, MDF, hardwood, and veneered or laminated surfaces.
• 2 Negatively Ground Spurs (V2) - the negative grind geometry scribes the perimeter of the hole before the main cutters engage, delivering a crisp, chip-free bore edge critical for furniture panels and pre-finished materials.
• Super-Strength Steel Body - the reinforced steel shank and body provide the rigidity needed to maintain dimensional accuracy across long production cycles without flex or deflection.
• Left-Hand (LH) Rotation - specifically engineered for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, ensuring compatibility with dedicated LH boring heads without requiring adapter workarounds.
• 8 x 20mm Shank - the parallel shank with compatible dimensions mounts securely into standard boring machine chucks and adapters, enabling quick tool changes and a stable, vibration-free grip during operation.
• 30mm Cutting Height - provides sufficient boring depth for standard dowel connections used in flat-pack and assembled furniture, allowing proper dowel seating without breakthrough risk on typical panel thicknesses.

Why This Product

• The left-hand rotation designation makes this drill a direct, purpose-built solution for LH spindle positions on multi-spindle CNC boring machines - eliminating the need for rotation adapters and preserving bore accuracy and machine balance.
• The combination of 2 negatively ground spurs and 2 carbide precision ground cutting edges means both the perimeter and the core of each hole are cut cleanly - reducing sanding, rework, and reject rates on laminated or coated panel surfaces.
• Carbide (HW) construction tolerates the abrasive conditions created by chipboard, MDF, and HDF - materials that rapidly dull standard high-speed steel bits - allowing more holes per sharpening cycle and lower tooling cost over time.
• At 55.5mm total length with a 7mm diameter and an 8 x 20mm shank, this drill fits the dimensional envelope of standard industrial boring machines used in cabinet making and furniture panel processing, making it a direct drop-in for common tooling setups.

Specifications

• Manufacturer Part Number: 306.070.12
• Brand: CMT Orange Tools
• Product Type: Dowel Drill
• Diameter: 7mm
• 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
• Blade Material: HW (Tungsten Carbide)

Approved Applications

• Blind hole drilling for dowel connections in panel furniture and cabinet assembly
• Panel drilling on multi-spindle CNC boring machines (left-hand spindle positions)
• Furniture manufacturing and flat-pack panel processing
• Cabinet making and carcass construction
• Boring in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels