CMT 307.064.12 Dowel Drill 1/4" x 40 x 67mm Left-Hand by CMT is a precision-engineered boring tool built for blind hole drilling in furniture panels, cabinet components, and solid wood assemblies. Featuring a tungsten carbide (HW) cutting head mounted on a super-strength steel body, this left-hand rotation dowel drill delivers clean, flat-bottomed holes with crisp sidewalls - exactly what demanding dowel joinery and panel processing applications require. The 1/4" diameter, 40mm cutting depth, and 67mm overall length make it well-suited for medium-depth boring tasks on CNC multi-spindle machines and panel boring centers.

Key Features

• HW (Tungsten Carbide) Cutting Head on Super-Strength Steel Body - delivers long service life and consistent cutting performance across chipboard, MDF, hardwood, and coated panels, reducing tool change frequency in high-production environments.
• Precision-Balanced Centre Point - keeps the drill accurately registered at the start of each bore, preventing walk or positional drift and ensuring hole placement is repeatable from the first cut to the last.
• 2 Precision-Ground HW Cutting Edges (Z2) - sharply honed carbide edges produce a clean, flat hole bottom ideal for blind dowel holes, seating dowels flush and maintaining joint integrity.
• 2 Negatively Ground Spurs (V2) - negatively set spur geometry shears panel surface fibers before the main cutting edges engage, preventing tearout and producing smooth bore walls on laminates and coated panels.
• Left-Hand (LH) Rotation - engineered for left-hand spindle positions on multi-spindle boring machines and CNC boring centers, allowing correct integration into machines configured for LH boring heads.
• 8x20mm Parallel Shank - standardized shank dimensions ensure secure, consistent clamping in machine chucks and boring head adapters, minimizing runout for accurate hole diameter and depth.

Why This Product

• The negatively ground spur geometry makes this drill a strong choice for coated panels, laminates, and MDF where surface quality at the bore entry is critical - clean edges mean no secondary cleanup or edge repair before assembly.
• The left-hand rotation designation fills a specific machine requirement: multi-spindle CNC boring machines assign LH and RH spindles across the row, and having the correctly handed tool eliminates the risk of climb-cutting, burning, or poor finish caused by running the wrong rotation direction.
• The 40mm cutting height accommodates medium-depth blind holes needed for standard dowel lengths commonly used in panel furniture and cabinet carcass assembly, giving enough boring depth for a secure dowel joint without breakthrough risk on typical panel thicknesses.
• Carbide (HW) construction means this drill retains its edge far longer than high-speed steel alternatives when running through abrasive engineered wood products like particleboard and HDF, keeping cycle times and sharpening intervals predictable in production settings.

Specifications

• Manufacturer Part Number: 307.064.12
• Brand: CMT Orange Tools
• Product Type: Dowel Drill
• Diameter: 1/4"
• Cutting Height: 40mm
• Total Length: 67mm
• Shank: 8x20mm
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Rotation: Left-Hand (LH)
• Blade Material: HW (Tungsten Carbide)

Approved Applications

• Blind hole drilling for dowel connections in panel furniture and cabinet carcasses
• Panel drilling on CNC multi-spindle boring machines
• Furniture manufacturing and case goods production
• Cabinet making and built-in millwork assembly
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels