The CMT 306.055.12 Dowel Drill 7/32" x 30 x 55.5mm Left-Hand by CMT is a precision-engineered HW (carbide-tipped) boring tool built for high-speed blind hole drilling on CNC multi-spindle boring machines, panel processing centers, and automated furniture production equipment. With a left-hand rotation designed to pair with specific spindle configurations, this dowel drill delivers clean, accurate bores in solid wood, chipboard, MDF, laminates, and coated panels - making it a go-to choice for cabinet makers, furniture manufacturers, and panel fabricators who demand consistent results at production speeds.

Key Features

• HW (Carbide-Tipped) Cutting Head with Precision-Balanced Centre Point - the carbide-grade head resists wear during high-cycle CNC production runs, while the balanced centre point self-locates accurately on entry to reduce drift and produce repeatable hole placement across large panel batches.
• 2 HW Precision-Ground Cutting Edges (Z2) - dual carbide cutting edges shear material cleanly and symmetrically, reducing tear-out and delivering smooth bore walls that require little to no cleanup before dowel assembly.
• 2 Negatively Ground Spurs (V2) - the negative grind geometry of the spurs scores the surface fiber ahead of the cutting edges, producing flat-bottomed blind holes with crisp, chip-free entry rims - critical for laminated or coated panel surfaces where surface quality directly affects finished appearance.
• Super-Strength Steel Body Construction - the tool body is manufactured from super-strength steel, providing the rigidity and vibration resistance needed to maintain dimensional accuracy across extended production runs without deflection.
• Left-Hand (LH) Rotation - purpose-built for left-hand spindle configurations on multi-spindle boring machines, ensuring the tool engages correctly and chip ejection works as designed for clean, unobstructed bores.
• 8 x 20mm Parallel Shank - the 8mm shank with 20mm engagement length provides a secure, concentric grip in standard boring machine chucks and adapters, reducing runout and extending tool life.
• Compact Short-Series Profile (55.5mm Total Length) - the short overall length minimizes overhang and bending moment during cutting, contributing to tighter bore tolerances and reduced spindle stress on high-density multi-spindle heads.

Why This Product

• Purpose-matched for left-hand spindle positions on multi-spindle CNC boring machines - if your machine layout includes LH spindles, this drill is engineered specifically for that rotation direction, ensuring proper cutting action and chip clearance rather than a compromise workaround.
• The combination of negatively ground spurs and HW precision-ground cutting edges addresses one of the most common production challenges - chipping and fiber tear-out at the hole rim on laminated and coated panels - so panels go directly to assembly without rework.
• The 7/32" (approximately 5.5mm) diameter and 30mm cutting depth are sized to match standard dowel connection requirements in cabinet and furniture panel construction, making this drill a direct-fit solution for common joinery workflows without requiring custom toolpath adjustments.
• The HW carbide construction supports multiple resharpenings, extending tool life and reducing per-hole tooling cost over time in high-volume production environments.

Specifications

• Manufacturer Part Number: 306.055.12
• Brand: CMT Orange Tools
• Product Type: Dowel Drill
• Diameter: 7/32"
• Cutting Height: 30mm
• Total Length: 55.5mm
• Shank: 8 x 20mm
• Rotation: Left-Hand (LH)
• Number of Teeth: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Carbide-Tipped)

Approved Applications

• Blind hole drilling for dowel joinery connections
• Panel drilling in furniture and cabinet manufacturing
• High-speed CNC multi-spindle boring operations
• Panel processing on automated production lines
• Drilling chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels