CMT 311.127.12 Dowel Drill - 1/2" x 35 x 70mm Left-Hand by CMT is a precision-engineered, carbide-tipped boring tool designed for clean, accurate blind hole drilling in panel processing and furniture manufacturing. This left-hand rotation dowel drill features a 1/2" cutting diameter, a 35mm cutting height, and a compact 70mm overall length that suits demanding multi-spindle CNC boring applications. Built for chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels, it delivers the consistent bore quality required in cabinet making and high-volume panel work.

Key Features

• 2-flute tungsten carbide (HW) head - two precision-ground cutting edges provide clean, flat-bottomed blind holes that are ready for dowel insertion without secondary finishing.
• Negatively ground spurs (2 spurs) - shear the panel surface fibers before the cutting edges engage, producing smooth bore walls and chip-free entry points in laminates and coated panels.
• PTFE-coated spiral flutes - the orange or black P.T.F.E. coating on the spiral portion repels pitch and adhesive buildup, reducing heat and extending tool life between sharpenings.
• Precision balanced centre point - keeps the drill accurately positioned at the start of each bore, reducing wander and ensuring repeatable hole placement critical to dowel alignment in furniture panels.
• Super-strength steel body - the steel shank and spiral body resist flex under multi-spindle boring loads, maintaining concentricity across high-cycle production runs.
• Parallel shank with driving flat and length adjusting screw - the 10 x 30mm shank seats securely in boring machine spindles, and the length adjusting screw allows precise depth setting without resetting the machine stop each time.
• Left-hand (LH) rotation - purpose-built for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, ensuring the correct chip ejection direction and clean bore exit.

Why This Product

• The left-hand rotation design specifically addresses the LH spindle positions common on industrial multi-spindle CNC boring machines and panel processing centers - using a right-hand drill in these positions causes poor hole quality and premature wear.
• The combination of negatively ground spurs and a precision-balanced carbide centre point means the drill enters and exits laminated or coated panels cleanly, reducing scrap and rework in furniture and cabinet production.
• At 70mm overall length with a 35mm cutting height, this long-series dowel drill reaches the deeper blind hole depths that standard-series drills cannot, making it the right choice for thicker panels or applications requiring greater bore depth.
• The P.T.F.E.-coated spiral and negatively ground spurs work together to handle the full range of common panel materials - from raw chipboard and MDF to HDF, hardwood, softwood, plywood, and coated or laminated panels - without requiring tool changes between material types.

Specifications

• Manufacturer Part Number: 311.127.12
• Product Type: Dowel Drill
• Diameter: 1/2"
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 30mm parallel shank with driving flat and length adjusting screw
• Number of Flutes: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Rotation: Left-hand (LH)
• Coating: Orange or black P.T.F.E. on spiral portion
• Brand: CMT Orange Tools

Approved Applications

• Blind hole drilling for dowel connections in panel assemblies
• Furniture manufacturing - drilling for dowel joinery in case goods and cabinet panels
• Cabinet making - precision boring in face frames, sides, and shelving panels
• Panel processing on multi-spindle CNC boring machines
• Panel processing centers and CNC boring centers
• Boring machines with adapter or chuck - with appropriate LH spindle setup
• Drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels