CMT 310.060.42 Dowel Drill 6 x 27 x 57.5mm Left-Hand is a solid carbide boring bit engineered for precise, clean blind-hole drilling in demanding cabinet making, furniture manufacturing, and panel processing applications. Built entirely from premium super micrograin carbide sourced from Ceratizit, this 6mm left-hand rotation dowel drill delivers exceptional bore quality and long service life on CNC routers, multi-spindle boring machines, and high-speed boring units. Whether you are drilling dowel holes in hardwood, MDF, particle board, or veneered panels, this short-series bit - at 57.5mm overall length - is designed to fit standard boring head configurations while maintaining the rigidity and precision that production environments demand.

Key Features

• Solid super micrograin carbide construction (HW material grade) - the entire bit is machined from a single piece of premium Ceratizit carbide, eliminating the risk of tip separation and allowing an almost unlimited number of resharpenings to extend tool investment over time.
• 2 curved, negatively ground spurs (V2) - the uniquely designed spurs score the material perimeter before the cutting edges engage, producing exceptionally clean bore walls and flat-bottom holes with no tearout or rough edges, even in veneered and coated panels.
• Plunge edge extending to the centre of the bit - reduces drilling resistance during entry, which translates directly into faster production speeds and less load on boring machine spindles.
• 2 cutting edges with 2 spiral flutes (Z2) - balanced chip evacuation keeps the bore free of debris during cutting, reducing heat buildup and maintaining bore quality throughout extended production runs.
• Oversized cylindrical head - larger than traditional dowel drill profiles, this robust head resists deflection and wear during prolonged use on multi-spindle CNC boring centres.
• Left-hand (LH) rotation - purpose-designed for left-hand spindle positions on multi-spindle boring heads, ensuring correct cutting geometry and clean results without improvising with right-hand tooling.
• 10 x 27mm parallel shank with driving flat - provides secure, positive engagement in standard boring head collets, preventing slippage under high feed rates and maintaining positional accuracy.
• Extreme sharpening rating - the solid carbide body can be resharpened repeatedly without losing geometry, reducing long-term tooling costs in high-volume production settings.
• Centre point balanced tip - ensures the drill self-centres accurately on entry, resulting in consistently positioned dowel holes with minimal layout error across batch production.
• Compatible with hardwood and difficult composites - engineered to handle particle board, MDF, and veneered wood without premature wear, making it a reliable choice across the full range of materials found in modern furniture and cabinet manufacturing.

Why This Product

• Production-grade solid carbide where carbide-tipped bits fall short - because this bit is a single solid carbide unit rather than a tipped design, it handles the abrasive demands of continuous boring in MDF, particle board, and veneered composites without the risk of tip delamination mid-run.
• Correct geometry for left-hand spindle positions - multi-spindle boring machines require matched LH and RH tooling for proper cutting action. This bit is purpose-built for left-hand rotation, so you get clean bores rather than the torn edges that result from using wrong-hand tooling.
• Resharpenable solid carbide reduces long-term cost per hole - unlike disposable or brazed-tip bits, the solid carbide body accepts repeated resharpenings, meaning the initial tool investment is spread across a far greater number of holes drilled over the tool's service life.
• 27mm cutting height in a compact 57.5mm overall length - the short-series format fits tight boring head configurations without sacrificing usable cutting depth, keeping the bit suitable for standard panel-processing setups while maintaining rigidity and minimizing deflection.

Specifications

• Manufacturer Part Number: 310.060.42
• Brand: CMT Orange Tools
• Diameter: 6mm
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10 x 27mm (parallel shank with driving flat)
• Rotation: Left-hand (LH)
• Number of Spurs: 2
• Number of Cutting Edges: 2
• Blade Material: HW (solid super micrograin carbide)
• Sharpening: Extreme

Approved Applications

• Blind hole drilling for dowel joinery connections
• Panel drilling in furniture manufacturing and cabinet making
• Boring in hardwood and softwood
• Boring in particle board and chipboard
• Boring in MDF and HDF
• Boring in veneered wood and coated panels
• High-speed multi-spindle boring machine operations
• CNC router and CNC boring centre tooling