CMT Dowel Drill 10 x 27 x 57.5mm Left-Hand Rotation is a solid carbide boring bit engineered for precision blind-hole drilling in furniture manufacturing, cabinetmaking, and panel processing applications. Built entirely from premium super micrograin carbide, this left-hand (LH) dowel drill delivers exceptionally clean bores in hardwood, MDF, particle board, veneered panels, and other demanding composite materials. Its compact 57.5mm overall length and 10mm diameter make it a go-to tool for high-density multi-spindle CNC boring machines and CNC routers where accuracy and repeatability are critical.

Key Features

• Solid Super Micrograin Carbide Construction (HW Material Grade) - the entire bit is formed from a single unit of premium-grade carbide, eliminating the tip-body interface weakness found in carbide-tipped designs and enabling an almost unlimited number of resharpenings for a lower long-term cost per hole.
• Curved, Negatively Ground Spurs (2 Spurs) - the uniquely designed spur geometry cuts cleanly at the perimeter of the bore before the main cutting edges engage, producing flat-bottomed blind holes with no rough edges or tearout - critical when drilling veneered or coated panels where surface quality matters.
• Oversized Cylindrical Head - larger than traditional boring bit heads, this robust body resists deflection and wear during prolonged use, maintaining hole diameter accuracy across high-volume production runs on CNC boring centers and panel processing equipment.
• Full-Length Plunge Edge to Center - the cutting edge runs all the way to the center of the bit, reducing drilling resistance, increasing feed-rate capability, and extending the interval between sharpenings so production throughput stays high.
• Left-Hand (LH) Rotation - designed for left-hand spindle configurations common on multi-spindle boring machines, ensuring proper chip evacuation and bore quality when installed on the correct spindle side.
• 2-Flute, 2-Spur Geometry with 10mm Shank x 27mm Shank Length - the parallel shank is sized for direct spindle mounting on standard boring machine chucks and adapters, providing secure, concentric tool holding with minimal runout.
• Extreme Sharpening Rating - rated for extreme resharpening cycles, this bit can be reground repeatedly without sacrificing cutting geometry, making it a cost-effective long-term investment compared to disposable alternatives.
• 27mm Cutting Height - sufficient depth capacity for standard dowel pocket depths in furniture-grade panel assembly, reducing the need for multiple plunge passes and keeping cycle times short.

Why This Product

• Furniture manufacturers and cabinet shops working with hardwood, MDF, particle board, and veneered panels need a boring bit that leaves a clean, precise hole every time - the curved negatively ground spurs on this CMT dowel drill produce exactly that result, reducing sanding and rework on finished faces.
• Shops running high-speed multi-spindle CNC boring machines or CNC routers demand tools that can keep pace with production speeds without frequent changeovers - the solid micrograin carbide construction and extended edge life between sharpenings keep the machine running longer between stops.
• The solid single-piece carbide body means every resharpening restores the full original geometry without risk of tip separation, giving quality-conscious shops added safety and predictable performance over the tool's service life.
• With a 10mm diameter and 57.5mm overall length, this bit fits the most common dowel-joining specifications used in flat-pack and frameless cabinet construction, making it a direct drop-in for standard boring machine configurations that require a left-hand spindle bit.

Specifications

• Manufacturer Part Number: 310.100.42
• Brand: CMT Orange Tools
• Diameter: 10mm
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10 x 27mm
• Rotation: Left-Hand (LH)
• Number of Teeth: 2
• Number of Spurs: 2
• Material: HW (Solid Super Micrograin Carbide)
• Sharpening: Extreme

Approved Applications

• Blind hole drilling for dowel joinery connections
• Panel drilling in flat-pack and frameless furniture manufacturing
• Cabinet making and case goods production
• CNC boring center and multi-spindle boring machine operations
• High-speed boring in hardwood, particle board, MDF, and veneered wood
• Drilling coated panels and difficult composite sheet materials