CMT Two Flute Dowel Drill 5/16" x 44 x 77mm Left-Hand by CMT is a precision-engineered boring tool built for furniture manufacturing, cabinet making, and panel processing operations that demand clean, flat-bottom blind holes for dowel joinery. With a left-hand rotation and an extended 77mm overall length, this long-series carbide-tipped dowel drill reaches deep into thick panels and engineered wood products where standard-length bits fall short. Whether you are running a multi-spindle CNC boring machine or a panel processing center, this tool delivers consistently accurate dowel holes in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels.

Key Features

• Tungsten carbide (HW) cutting head with precision-balanced centre point - the carbide tip maintains cutting accuracy over extended production runs, reducing runout and keeping hole placement consistent bore after bore.
• 2 precision-ground carbide cutting edges (Z2) - dual cutting edges distribute cutting load evenly, producing smooth, flat-bottom holes that seat dowels correctly without rework.
• 2 negatively ground spurs (V2) - the negative grind on the spurs scores the material cleanly ahead of the cutting edges, virtually eliminating tearout and rough bore walls in laminates, coated panels, and veneered chipboard.
• PTFE coating on the cutter portion - the orange or black P.T.F.E. (polytetrafluoroethylene) non-stick coating prevents pitch and adhesive buildup on the flutes, extending tool life and reducing cleaning downtime between production runs.
• Super-strength steel body - the high-grade steel shank and body resist flexing under the lateral forces common in multi-spindle boring, keeping the tool rigid and the hole diameter true.
• Parallel 10x30mm shank with driving flat and length adjusting screw - the driving flat prevents slipping in the spindle chuck, and the length adjusting screw allows quick depth setting for repeatable results across a run of identical parts.
• Left-hand (LH) rotation - designed specifically for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, ensuring proper chip evacuation and correct cutting geometry for LH bores.
• Long-series 77mm overall length with 44mm cutting height - the extended reach enables deep blind hole drilling in thick panels and engineered board without repositioning the workpiece or changing tools.

Why This Product

• Purpose-built for left-hand spindle positions - if your CNC boring machine or panel processing center requires a left-hand rotation drill for specific spindle positions, this tool is engineered exactly for that requirement, so you are not adapting a right-hand tool and risking cutting quality or spindle damage.
• Long-series length handles thick panels in a single pass - at 77mm overall with a 44mm cutting height, this bit reaches depths that standard-series dowel drills cannot, reducing setups and keeping production moving on thick panel furniture and cabinet components.
• Negatively ground spurs protect finished surfaces - in furniture and cabinet production where face surfaces are already laminated or veneered, the negatively ground spurs score cleanly before material is removed, keeping the bore entry crisp and eliminating the chip-out that leads to rejected parts.
• PTFE coating reduces maintenance interruptions - in high-volume boring operations where adhesive-coated dowels or resin-heavy engineered wood generate buildup quickly, the non-stick P.T.F.E. coating keeps flutes clear longer, so the drill performs consistently without frequent cleaning stops.

Specifications

• Manufacturer Part Number: 362.080.12
• Brand: CMT Orange Tools
• Diameter: 5/16"
• Cutting Height: 44mm
• Total Length: 77mm
• Shank: 10x30mm (parallel shank with driving flat and length adjusting screw)
• Number of Flutes: 2
• Number of Spurs: 2
• Spur Grind: Negatively ground spurs
• Blade Material: HW (tungsten carbide)
• Rotation: LH (Left-Hand)
• Coating: P.T.F.E. (orange or black)

Approved Applications

• Blind hole drilling for dowel joinery connections
• Panel drilling in furniture manufacturing
• Cabinet making and cabinet component boring
• Left-hand spindle positions on multi-spindle CNC boring machines
• CNC boring centers
• Panel processing centers
• Boring machines with adapter or chuck
• Drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels