CMT 307.055.12 Dowel Drill 7/32" x 40 x 67mm Left-Hand by CMT is a precision-engineered left-hand rotation boring tool built for blind hole drilling in panel processing and furniture manufacturing applications. With a 7/32" cutting diameter, a 40mm cutting height, and a compact 67mm overall length, this dowel drill delivers accurate, repeatable bores in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels. The HW (tungsten carbide) cutting head, paired with negatively ground spurs, produces flat-bottomed holes with clean, tear-out-free walls - exactly what dowel joinery and cabinet assembly demand.

Key Features

• HW (Tungsten Carbide) Cutting Head on Super-Strength Steel Body - the hard carbide material retains a sharp edge far longer than standard high-speed steel, reducing the frequency of tool changes during high-volume panel boring operations.
• Precision Balanced Centre Point - keeps the drill on target from the moment it contacts the workpiece, resulting in accurately positioned holes that align perfectly for dowel insertion and panel assembly.
• 2 HW Precision-Ground Cutting Edges (Z2) - dual carbide cutting edges shear material cleanly and efficiently, producing consistent bore geometry and a smooth hole bottom essential for tight-fitting dowel joints.
• 2 Negatively Ground Spurs (V2) - the negative grind geometry scores the material perimeter before the cutting edges engage, preventing chipout and surface delamination on coated panels and laminates.
• Left-Hand Rotation (LH) - designed specifically for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, making it a direct fit where right-hand tools cannot be used.
• 8x20mm Parallel Shank - the standardized shank size is compatible with a wide range of boring machine chucks and adapters, simplifying tool setup and changeover.
• 40mm Cutting Height - provides sufficient boring depth for the through-and-through dowel applications and deeper panel constructions commonly encountered in cabinet and furniture production.

Why This Product

• Left-hand spindle compatibility makes this drill a purpose-built solution for the LH boring positions on multi-spindle CNC boring machines and panel processing centers - no adapters or workarounds required.
• The combination of a precision balanced centre point and negatively ground spurs means holes land where they are meant to and walls stay clean, reducing reject rates in furniture and cabinet assembly lines.
• HW carbide construction on a super-strength steel body delivers the edge retention needed for continuous boring in abrasive engineered materials like chipboard, MDF, HDF, and coated panels without frequent resharpening.
• With a 40mm cutting height and compact 67mm overall length, this medium-series dowel drill fits standard boring head configurations while still reaching the depth required for secure dowel connections in panel goods.

Specifications

• Manufacturer Part Number: 307.055.12
• Brand: CMT Orange Tools
• Diameter: 7/32"
• Cutting Height: 40mm
• Total Length: 67mm
• Shank: 8x20mm
• Rotation: Left-Hand (LH)
• Number of Cutting Edges: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)

Approved Applications

• Blind hole drilling for dowel connections
• Panel drilling in furniture manufacturing
• Cabinet making and case goods production
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
• Multi-spindle CNC boring machines
• CNC boring centers
• Panel processing centers
• Boring machines with adapter or chuck