CMT 311.100.12 Dowel Drill - 10 x 35 x 70mm Left-Hand Rotation is a precision-engineered, 2-flute left-hand boring tool built for blind hole drilling in panel processing, furniture manufacturing, and cabinet making applications. Designed for use on multi-spindle CNC boring machines and panel processing centers, this dowel drill features a tungsten carbide (HW) head bonded to a super-strength steel body, with a PTFE-coated spiral that resists pitch and adhesive buildup during continuous production runs. Whether you are boring dowel connection holes in chipboard, MDF, hardwood, or laminated panels, this left-hand drill delivers clean, flat-bottom holes with consistent accuracy across high-volume operations.

Key Features

• HW (Tungsten Carbide) Head on Super-Strength Steel Body - provides long-lasting cutting performance and resistance to wear, reducing the frequency of tool changes in production environments.
• PTFE-Coated Spiral Flutes - the orange or black PTFE coating prevents pitch, resin, and glue from bonding to the flute surface, keeping the tool running clean and maintaining consistent chip evacuation.
• 2 Precision-Ground HW Cutting Edges - deliver repeatable bore quality with tight dimensional tolerances, ensuring dowel joints seat correctly and panels align flush during assembly.
• 2 Negatively Ground Spurs (V2 configuration) - score the material cleanly at the perimeter of the bore before the cutting edges engage, eliminating tearout on coated panels, laminates, and veneered surfaces.
• Precision-Balanced Centre Point - locates the drill accurately on the workpiece without wandering, producing holes that are centered and repeatable in automated multi-spindle setups.
• Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 30mm shank seats securely in boring machine chucks and adapters while the length adjusting screw allows fine-tuned depth control for consistent blind hole depth across all spindles.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle positions on multi-spindle boring machines, ensuring correct cutting geometry and chip evacuation direction for that spindle orientation.

Why This Product

• The negatively ground spur geometry combined with the carbide cutting edges makes this drill a reliable choice for laminated panels and coated chipboard where surface tearout around the bore entrance is unacceptable in finished furniture.
• The PTFE-coated spiral directly addresses one of the most common causes of downtime in panel boring - resin and glue buildup on flutes - helping maintain cutting efficiency between sharpening cycles.
• Left-hand rotation is a required specification for certain spindle positions on multi-spindle CNC boring machines; using the correct hand of cut ensures proper geometry engagement rather than rubbing, protecting both the tool and the workpiece.
• The 35mm cutting height on a 70mm overall length gives this drill the reach needed for deeper blind holes and panel thicknesses that shorter series drills cannot accommodate, expanding its usefulness across a wider range of panel processing tasks.

Specifications

• Manufacturer Part Number: 311.100.12
• Brand: CMT Orange Tools
• Diameter: 10mm
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 30mm parallel shank with driving flat and length adjusting screw
• Rotation: Left-Hand (LH)
• Number of Flutes: 2
• Number of Cutting Edges: 2
• Number of Spurs: 2
• Spur Sharpening: Negatively ground spurs
• Head Material: HW (Tungsten Carbide)
• Body Material: Super-strength steel
• Coating: PTFE (orange or black) on spiral portion

Approved Applications

• Blind hole drilling for dowel connections in panel furniture and cabinetry
• Panel drilling on multi-spindle CNC boring machines
• Furniture manufacturing and cabinet making production lines
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels