CMT 308.150.12 Dowel Drill - 19/32" x 1 3/16" x 2 17/64" Left-Hand Rotation by CMT is a precision-engineered carbide-tipped boring tool designed for clean, flat-bottom blind hole drilling in solid wood, chipboard, MDF, laminates, and coated panels. With a 15mm cutting diameter and left-hand (LH) rotation, this short-series dowel drill is purpose-built for multi-spindle CNC boring machines and panel processing centers where accuracy, edge quality, and long tool life are critical. The negatively ground spurs and tungsten carbide (HW) construction make it a reliable choice for high-volume cabinet, furniture, and millwork production environments.

Key Features

• Tungsten Carbide (HW) Cutting Material - delivers hardness and wear resistance that extends tool life well beyond standard high-speed steel options, reducing downtime and replacement frequency in production settings.
• Negatively Ground Spurs (2 Spurs) - scribes the perimeter of the hole before the main cutters engage, producing clean bore walls and chip-free entry points with no tearout, which is critical when drilling laminates and coated panels.
• 2-Tooth Cutting Geometry - balanced cutting action that evacuates chips efficiently and maintains consistent hole geometry across repeated cycles on CNC boring equipment.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle configurations on multi-spindle boring machines, ensuring proper chip ejection and cutting direction without modification or adaptation.
• 15mm Diameter with 30mm Cutting Height - the 30mm cutting depth accommodates standard dowel joint drilling requirements, producing blind holes to the depth needed for furniture and cabinet assembly without breakthrough.
• 10x20mm Parallel Shank with Driving Flat - the flat-sided shank locks securely into boring machine spindle chucks, preventing slipping under load and maintaining positional accuracy cycle after cycle.
• Short Series Profile (57.5mm Total Length) - compact overall length reduces vibration and deflection during drilling, supporting tighter hole-position tolerances on closely spaced spindle heads.

Why This Product

• Specifically designed for left-hand spindle positions on multi-spindle and CNC boring machines - if your machine calls for LH rotation bits, this drill matches that requirement exactly without the risk of using an incorrectly rotating tool that damages the workpiece surface.
• The negatively ground spur geometry is particularly well-suited for laminates, melamine-coated panels, and MDF where clean entry and exit are non-negotiable in finished furniture and cabinet production.
• Carbide (HW) construction in a short-series format means this drill maintains cutting edge integrity over long production runs while keeping the tool stiff enough to hold tight positional tolerances in gang-boring applications.
• The 10x20mm parallel shank with driving flat is a standard industrial boring machine interface, making this drill a direct-fit replacement for worn or damaged dowel drills without the need for adapters.

Specifications

• Manufacturer Part Number: 308.150.12
• Diameter: 15mm (19/32")
• Cutting Height: 30mm (1 3/16")
• Total Length: 57.5mm (2 17/64")
• Shank: 10x20mm
• Rotation: Left-Hand (LH)
• Number of Teeth: 2
• Number of Spurs: 2
• Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Series: Short Series
• Brand: CMT Orange Tools

Approved Applications

• Solid Hardwood
• Solid Softwood
• Chipboard
• MDF (Medium Density Fiberboard)
• HDF (High Density Fiberboard)
• Plywood
• Laminates
• Coated and Melamine-Faced Panels
• Multi-Spindle CNC Boring Machines
• CNC Boring Centers
• Panel Processing Centers
• Boring Machines with Adapter or Chuck