CMT 308.070.11 Dowel Drill - 9/32" x 1 3/16" x 2 17/64" Right-Hand by CMT is a precision tungsten carbide (HW) dowel boring bit engineered for clean, flat-bottom blind holes in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels. With a 7mm cutting diameter, a 30mm cutting height, and a 57.5mm total length, this short-series dowel drill is purpose-built for use in multi-spindle CNC boring machines, boring centers, and panel processing equipment where accuracy and surface quality are critical. The right-hand rotation, 10x20mm parallel shank with driving flat, and negatively ground spurs make this bit a dependable choice for cabinetry production, furniture manufacturing, and any high-volume dowel joint operation demanding repeatable precision.

Key Features

• Tungsten Carbide (HW) Construction - hardmetal carbide maintains a sharp cutting edge far longer than high-speed steel alternatives, reducing downtime and resharpening frequency in production environments.
• Negatively Ground Spurs - the precision-ground, negatively set spurs score the wood fibers cleanly ahead of the main cutting edges, producing hole walls and flat bottoms with no tearout or rough edges - critical for visible dowel joints and laminated surfaces.
• 2-Spur, 2-Tooth Geometry - the dual-spur, dual-tooth configuration balances the cutting load evenly across the diameter, delivering consistent bore quality and reducing lateral stress on the tool and spindle.
• Short-Series 57.5mm Total Length - the compact 57.5mm overall length and 30mm cutting height are optimized for blind-hole dowel drilling, preventing over-penetration and fitting tightly spaced multi-spindle boring heads without interference.
• 10x20mm Parallel Shank with Driving Flat - this industry-standard shank size seats securely in multi-spindle boring machine chucks and CNC boring center collets, ensuring zero slippage during high-cycle production runs.
• Right-Hand (RH) Rotation - matched to standard CNC boring and panel processing spindle rotation, eliminating setup errors and ensuring the spur geometry engages material in the correct direction for clean cutting.

Why This Product

• The negatively ground spur design specifically addresses tearout on laminates, coated panels, and fine hardwood faces - surfaces where bore quality directly impacts the finished appearance of furniture and cabinetry.
• The 7mm (9/32") diameter is a widely used standard in dowel joint systems, making this bit immediately compatible with common dowel stock and automated insertion equipment without any modification.
• Hardmetal carbide (HW) construction stands up to the abrasive demands of chipboard, MDF, and HDF - materials that rapidly dull steel tools - keeping edge quality consistent across high-volume production shifts.
• The short-series 57.5mm body length is specifically suited to multi-spindle CNC boring machines and panel processing centers where spindle spacing is tight and tool-to-tool clearance is a design constraint.

Specifications

• Manufacturer Part Number: 308.070.11
• Brand: CMT Orange Tools
• Diameter: 7mm (9/32")
• Cutting Height: 30mm (1 3/16")
• Total Length: 57.5mm (2 17/64")
• Shank: 10x20mm
• Number of Spurs: 2
• Number of Teeth: 2
• Rotation: Right-Hand (RH)
• Sharpening: Negatively ground spurs
• Blade Material: Hardmetal Carbide (HW)

Approved Applications

• Chipboard
• MDF (Medium-Density Fiberboard)
• HDF (High-Density Fiberboard)
• Hardwood
• Softwood
• Plywood
• Laminates
• Coated Panels