CMT 308.040.11 Dowel Drill - 5/32" x 1-1/32" x 2-17/64" RH by CMT is a precision tungsten carbide (HW) dowel boring bit engineered for clean, flat-bottom blind holes in solid wood, chipboard, MDF, and laminates. With a right-hand (RH) rotation, a 10x20mm parallel shank, and negatively ground spurs, this short-series drill delivers consistent bore quality in multi-spindle CNC boring machines, boring centers, and panel processing equipment.

Key Features

• Tungsten Carbide (HW) Construction - hard carbide material maintains a sharp cutting edge through high-volume production runs in abrasive panel materials like chipboard and MDF, reducing downtime for tool changes.
• Negatively Ground Spurs (2 Spurs) - precision-sharpened spurs score the material perimeter before the main cutters engage, producing clean bore walls and sharp entry circles with no tearout or rough edges, even in coated or laminated panels.
• 2-Flute, 2-Tooth Geometry - balanced cutting action provides smooth chip evacuation and stable drilling without wandering, giving repeatable hole diameter accuracy at 5/32" across a production run.
• Short Series Total Length (57.5mm / 2-17/64") - compact overall length minimizes deflection and runout in close-tolerance multi-spindle heads, keeping hole placement accurate even at tight spindle spacing.
• 26mm (1-1/32") Cutting Height - sufficient cutting depth for standard dowel joint blind holes, allowing proper dowel seating depth without breakthrough in typical panel thicknesses.
• 10x20mm Parallel Shank - designed to seat securely in the standard boring machine chuck or adapter, ensuring concentric rotation and consistent hole quality with minimal vibration.
• Right-Hand (RH) Rotation - matches the standard spindle direction of CNC boring centers and multi-spindle machines, making this a direct fit for conventional setups without requiring special toolholders.

Why This Product

• The 5/32" diameter in a short-series format (57.5mm total length) fills a specific need for fractional inch dowel boring in furniture and cabinet production where metric sizes do not align with hardware specifications.
• Negatively ground spurs combined with carbide (HW) construction make this bit well suited for abrasive engineered panels - chipboard, MDF, and laminates - where lower-grade steel bits wear quickly and produce ragged hole edges.
• The 10x20mm parallel shank with a standardized profile fits directly into multi-spindle CNC boring machines and boring centers without adapter modifications, simplifying tooling changeovers on production lines.
• Right-hand rotation and a 2-flute geometry balance cutting forces evenly, reducing the chance of hole position drift in repetitive drilling cycles - a key requirement for dowel joint accuracy in case goods and flat-pack furniture manufacturing.

Specifications

• Manufacturer Part Number: 308.040.11
• Brand: CMT Orange Tools
• Product Type: Dowel Drill
• Diameter: 5/32"
• Cutting Height: 26mm (1-1/32")
• Total Length: 57.5mm (2-17/64")
• Shank: 10x20mm
• Number of Spurs: 2
• Number of Teeth: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Solid hardwood and softwood
• Chipboard and particleboard
• MDF (Medium-Density Fiberboard)
• HDF (High-Density Fiberboard)
• Plywood
• Laminates and coated panels
• Blind hole dowel boring on multi-spindle CNC boring machines
• Panel processing centers and boring centers
• Boring machines with compatible adapter or chuck