CMT 306.100.12 Dowel Drill 10 x 30 x 55.5mm LH is a precision-engineered left-hand rotation boring tool from CMT, purpose-built for blind hole drilling in solid wood, chipboard, MDF, laminates, and coated panels at high CNC production speeds. With a 10mm cutting diameter, a hardmetal (HW) tipped head, and 2 precision-ground cutting edges paired with 2 negatively ground spurs, this dowel drill delivers consistently clean bore walls and flat-bottom holes - making it a reliable choice for furniture manufacturing, cabinet making, and panel processing applications where dowel joint accuracy is critical.

Key Features

• Super-strength steel body with HW (hardmetal) head - the carbide-tipped construction provides exceptional wear resistance, allowing the drill to maintain cutting accuracy through extended CNC production runs and enabling multiple resharpenings over the tool's service life.
• Precision balanced centre point - ensures the drill seats accurately at the start of each bore, reducing wander and delivering hole-to-hole repeatability that is essential for tight-tolerance dowel connections in panel furniture production.
• 2 HW precision-ground cutting edges (Z2) - hardmetal cutting edges remove material cleanly and efficiently, producing smooth hole walls that seat dowels securely without tearing fibres or leaving rough surfaces that would compromise joint strength.
• 2 negatively ground spurs (V2) - the negative grind geometry scores the material perimeter cleanly before the cutting edges engage, minimising tearout and chip-out on the bore entry - especially important when drilling laminates and coated panels where surface quality matters.
• Left-hand (LH) rotation - matched to left-hand spindles found on multi-spindle CNC boring machines and panel processing centres, allowing this drill to be used in the correct spindle position without compromising cut quality or tool stability.
• 8 x 20mm parallel shank - the standardised shank dimensions ensure compatibility with common chuck and adapter setups on CNC boring centres and multi-spindle boring machines, simplifying tool changes and setup time.
• Compact 55.5mm total length - the short-series profile keeps the tool close to the spindle nose, reducing deflection and vibration during high-speed boring operations and contributing to cleaner, more accurate holes.

Why This Product

• Designed specifically for left-hand spindle positions on multi-spindle CNC boring machines, this drill fills a critical need in high-volume panel processing lines where both LH and RH spindles must be equipped correctly for accurate, simultaneous drilling.
• The combination of a precision balanced centre point and negatively ground spurs makes this drill well suited for drilling coated panels and laminates where surface tearout at the bore entry would require rework or cause scrap - directly supporting quality and yield in furniture and cabinet production.
• Hardmetal (HW) cutting edges provide durability through long production runs, reducing the frequency of tool changes and downtime on CNC boring centres - important in high-throughput manufacturing environments where machine uptime directly affects output.
• With a 30mm cutting height and 55.5mm total length, this short-series geometry is optimised for blind hole drilling to standard dowel depths, making it a straightforward fit for typical panel joinery workflows without requiring custom depth stop adjustments.

Specifications

• Manufacturer Part Number: 306.100.12
• Brand: CMT Orange Tools
• Product Type: Dowel Drill
• Diameter: 10mm
• Cutting Height: 30mm
• Total Length: 55.5mm
• Shank: 8 x 20mm
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Rotation: Left-hand (LH)
• Blade Material: HW (Hardmetal / Carbide-Tipped)

Approved Applications

• Blind hole drilling for dowel connections
• Panel drilling in furniture manufacturing
• Cabinet making and case goods production
• Drilling in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels
• High-speed CNC production boring