CMT 311.111.12 Dowel Drill 7/16" x 35 x 70mm Left-Hand by CMT is a precision-engineered, left-hand rotation boring tool designed for clean, accurate blind-hole drilling in panel processing and furniture manufacturing applications. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this 2-flute dowel drill delivers flat-bottom bores with crisp, tear-free walls - making it the right choice for dowel joinery in chipboard, MDF, solid wood, laminates, and coated panels. The PTFE-coated spiral and negatively ground spurs ensure smooth chip evacuation and lasting sharpness even in high-volume production environments.

Key Features

• HW (Tungsten Carbide) Cutting Head - hard-wearing carbide construction maintains a sharp edge through demanding panel boring cycles, reducing resharpening frequency and downtime in production settings.
• 2 Precision-Ground HW Cutting Edges - dual carbide edges balanced around a centre point produce consistent bore geometry hole after hole, supporting tight tolerances for dowel-jointed assemblies.
• Precision Balanced Centre Point - keeps the drill accurately located at entry, preventing walk or skew on flat panel surfaces and delivering repeatable hole placement critical to multi-spindle boring operations.
• 2 Negatively Ground Spurs (V2) - the negative-angle spur geometry scores the material cleanly ahead of the cutting edges, minimising surface tear-out on laminates and coated panels where face quality matters most.
• PTFE-Coated Spiral Flutes - the orange or black PTFE coating on the spiral portion reduces friction and prevents pitch and glue buildup, extending tool life and keeping extraction smooth during continuous boring runs.
• Left-Hand (LH) Rotation - purpose-built for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centres, ensuring correct chip ejection and cutting action on LH-designated spindles.
• Parallel Shank with Driving Flat and Length Adjusting Screw - the 10x30mm parallel shank with driving flat and length adjusting screw allows secure positive drive and precise depth setting in boring machine chucks and adapters.
• 35mm Cutting Height in a 70mm Overall Length - the long-series (70mm) body provides the reach needed for deeper blind holes in thicker panels, while the 35mm cutting length accommodates typical dowel bore depths without excess tool overhang.

Why This Product

• The left-hand rotation configuration makes this drill a direct solution for LH spindle positions on multi-spindle CNC boring machines and panel processing centres - no workarounds or adaptor compromises needed.
• The combination of a carbide cutting head, negatively ground spurs, and PTFE-coated flutes addresses three common boring problems at once: premature wear, surface tear-out on coated panels, and chip buildup in the flutes - all in a single tool.
• At 70mm overall length with a 35mm cutting height, this long-series dowel drill handles deeper blind-hole requirements in furniture panel drilling that standard-length bits cannot reach, expanding the range of joints and panel thicknesses it can serve.
• The 7/16" diameter with a 10x30mm parallel shank and driving flat is engineered to seat securely and drive positively in boring machine spindles, reducing slippage risk and supporting accurate, repeatable hole spacing across large production batches.

Specifications

• Manufacturer Part Number: 311.111.12
• Brand: CMT Orange Tools
• Diameter: 7/16"
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10x30mm
• Rotation: Left-Hand (LH)
• Number of Flutes: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Number of Teeth: 2

Approved Applications

• Blind hole drilling for dowel connections and dowel joinery
• Panel drilling in furniture manufacturing
• Cabinet making and case goods production
• Chipboard and particleboard boring
• MDF and HDF panel processing
• Solid wood (hardwood and softwood) drilling
• Plywood boring
• Laminate and coated panel drilling
• Use on multi-spindle CNC boring machines
• Use on CNC boring centres and panel processing centres
• Use on boring machines with adapter or chuck