CMT 308.130.12 Dowel Drill - 33/64" x 1-3/16" x 2-17/64" Left-Hand Rotation is a professional-grade, carbide-tipped boring tool engineered for blind hole drilling in wood panels, chipboard, MDF, and laminates. Built by CMT with a hardmetal (HW) cutting edge and precision-ground negatively set spurs, this left-hand dowel drill delivers flat-bottomed, clean-walled holes essential for accurate dowel joinery and cabinet construction. With a 13mm cutting diameter, a 10x20mm parallel shank with driving flat, and a compact 57.5mm overall length, it is sized for multi-spindle CNC boring machines, CNC boring centers, and panel processing equipment where left-hand rotation spindles are used.

Key Features

• Hardmetal (HW) Carbide Cutting Edge - tungsten carbide material provides extended wear resistance compared to standard high-speed steel, keeping the drill sharp through high-volume panel and solid wood production runs.
• Negatively Ground Spurs - the precision-sharpened spur geometry scores the material ahead of the main cutting edge, producing clean bore walls and crisp, flat-bottomed holes with no tearout or rough edges on chipboard, MDF, hardwood, softwood, or laminates.
• 2-Spur, 2-Tooth Geometry - a balanced twin-spur, twin-tooth configuration distributes cutting load evenly for stable, chatter-free boring and consistent hole quality across the workpiece.
• Left-Hand (LH) Rotation - designed specifically for left-hand spindles found on multi-spindle CNC boring machines and panel processing centers, ensuring correct engagement and optimal cutting performance on dedicated LH tooling positions.
• 10x20mm Parallel Shank with Driving Flat - the standardized shank format seats securely in machine boring heads and adapters, providing positive drive and preventing slippage under load.
• Compact Short-Series Profile (57.5mm Total Length) - the reduced overall length minimizes overhang and runout, improving boring accuracy and positional repeatability in close-pitch multi-spindle applications.
• 13mm Cutting Diameter / 30mm Cutting Height - sized for standard dowel bores with sufficient cutting depth to accommodate a wide range of dowel lengths in blind-hole joinery applications.

Why This Product

• Left-hand spindle compatibility makes this drill a direct, purpose-built solution for LH tooling positions on multi-spindle CNC boring machines and panel processing centers - no adapter workarounds or reversed toolpaths required.
• The negatively ground spur design addresses one of the most common problems in panel boring - tearout and rough bore walls - making it well suited for finished surfaces on coated panels, laminates, and hardwood face frames where hole quality is visible or critical to dowel fit.
• Hardmetal (HW) carbide construction means the cutting edge holds its geometry longer in abrasive materials like MDF, chipboard, and HDF, reducing downtime for tool changes during production runs.
• The short-series 57.5mm overall length and standardized 10x20mm shank make this drill a practical fit for existing boring head toolholders without requiring specialized equipment or custom toolholders.

Specifications

• Manufacturer Part Number: 308.130.12
• Brand: CMT Orange Tools
• Diameter: 13mm (33/64")
• Cutting Height: 30mm (1-3/16")
• Total Length: 57.5mm (2-17/64")
• Shank: 10x20mm
• Number of Spurs: 2
• Number of Teeth: 2
• Spur Sharpening: Negatively ground spurs
• Rotation: Left-Hand (LH)
• Blade Material: HW (Hardmetal Carbide)

Approved Applications

• Chipboard and particle board panel boring
• MDF and HDF panel drilling
• Hardwood and softwood blind hole dowel boring
• Plywood panel processing
• Laminate and coated panel drilling
• Cabinet and furniture dowel joinery
• Multi-spindle CNC boring machine operations (LH spindle positions)
• CNC boring center panel processing