CMT 311.064.12 Dowel Drill 1/4" x 35 x 70mm Left-Hand by CMT is a precision-engineered, carbide-tipped boring tool designed for clean, accurate blind hole drilling in panel processing, furniture manufacturing, and cabinet making. Built for left-hand rotation on multi-spindle CNC boring machines and panel processing centers, this 1/4" diameter dowel drill features a tungsten carbide (HW) cutting head, 2 negatively ground spurs, and a PTFE-coated spiral body - delivering chip-free bore walls, flat-bottom holes, and extended tool life across a wide range of wood-based and composite materials.

Key Features

• Tungsten Carbide (HW) Cutting Head - the carbide tip maintains a sharp, precise cutting edge longer than standard high-speed steel, reducing tool changes and downtime during high-volume panel drilling operations.
• 2 Negatively Ground Spurs (V2) - the negatively set spurs score the material perimeter cleanly before the flutes evacuate chips, producing smooth bore walls and tear-out-free entries in chipboard, MDF, laminates, and coated panels.
• PTFE-Coated Spiral Body - the orange or black PTFE coating on the spiral portion prevents pitch and adhesive buildup, keeping the flutes clear and maintaining consistent chip evacuation during extended production runs.
• Precision Balanced Centre Point - the HW centre point registers the drill accurately on the work surface, ensuring hole positioning is repeatable and on-center for consistent dowel alignment across production batches.
• 2 HW Precision Ground Cutting Edges - dual carbide cutting edges work in balance to minimize vibration, reduce heat buildup, and deliver a flat-bottomed blind hole suited to dowel joinery applications.
• Super-Strength Steel Body - the high-strength steel shaft resists flex and deflection under load, supporting accurate drilling depth and straight-wall bores even at production feed rates.
• 10 x 30mm Parallel Shank with Driving Flat and Length Adjusting Screw - the standardized parallel shank with driving flat locks securely into CNC boring machine spindles, while the length adjusting screw allows precise depth setting without additional tooling.
• Left-Hand (LH) Rotation - designed specifically for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, ensuring correct cutting geometry and clean results when used in the correct spindle orientation.
• 35mm Cutting Height in a 70mm Overall Length - the long-series 70mm body provides the clearance needed for deeper blind hole boring in thicker panels while the 35mm cutting height handles the full boring depth in a single pass.

Why This Product

• The left-hand rotation specification makes this drill the correct choice for LH spindle positions on multi-spindle CNC boring machines - using the wrong rotation direction would produce poor cut quality and accelerated wear, so matching rotation to spindle is critical.
• The combination of 2 negatively ground spurs and 2 precision ground carbide cutting edges means both the perimeter score and the core removal are handled by carbide geometry - resulting in clean, flat-bottomed blind holes suitable for tight-tolerance dowel connections in furniture and cabinet panels.
• PTFE coating on the spiral keeps pitch and glue from accumulating during production runs in materials like chipboard, MDF, and laminates - maintaining consistent chip clearance without requiring frequent tool cleaning or replacement.
• The 10 x 30mm parallel shank with driving flat and length adjusting screw is compatible with standard multi-spindle boring machine chucks and adapters, making this an easy drop-in tool for CNC boring centers already set up for this shank format.

Specifications

• Manufacturer Part Number: 311.064.12
• Product Type: Dowel Drill
• Diameter: 1/4"
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 30mm parallel shank with driving flat and length adjusting screw
• Number of Flutes: 2
• Number of Spurs: 2
• Number of Teeth: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Rotation: Left-Hand (LH)
• Coating: PTFE (orange or black) on spiral portion
• Brand: CMT Orange Tools

Approved Applications

• Blind hole drilling for dowel connections in panel furniture and cabinet assembly
• Panel drilling in furniture manufacturing and cabinet making
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, and laminates
• Drilling in coated panels and plastics
• Use in multi-spindle CNC boring machines (left-hand spindle positions)
• Use in CNC boring centers and panel processing centers
• Use in boring machines with compatible adapter or chuck accepting 10 x 30mm parallel shank