CMT 313.050.12 Dowel Drill for Through Hole - 5 x 27 x 57.5mm Left-Hand Rotation is a precision carbide-tipped boring tool engineered for clean, accurate through-hole drilling in panel processing and furniture manufacturing applications. Built on a super-strength steel body with a tungsten carbide (HW) cutting head and a P.T.F.E.-coated spiral, this left-hand (LH) dowel drill delivers consistent hole quality in chipboard, MDF, hardwood, softwood, plywood, and coated panels. The through-hole geometry eliminates blowout on exit, making it a dependable choice for high-volume cabinet and furniture production on multi-spindle CNC boring machines and panel processing centers.

Key Features

• HW (Tungsten Carbide) Cutting Head - hard-wearing carbide construction maintains sharp cutting edges through demanding production runs, reducing downtime for tool changes in panel processing environments.
• P.T.F.E.-Coated Spiral Portion - the orange or black P.T.F.E. coating prevents pitch and glue buildup on the flutes, keeping the tool running cleanly and extending effective tool life in adhesive-heavy applications.
• 2 Precision-Ground Cutting Edges (Z2) - dual precision-ground flutes produce smooth bore walls and accurate hole diameters, ensuring consistent dowel joint fitment without secondary finishing.
• Precision Balanced Centre Point - the balanced centre point self-locates accurately at the bore position, reducing walk and improving positional accuracy across multi-spindle setups.
• Through-Hole Geometry - specifically designed for through-hole drilling, the flute and point geometry evacuates chips efficiently and prevents breakout on the panel exit face.
• Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 26mm parallel shank with driving flat locks securely in boring machine chucks and spindles, while the length adjusting screw allows precise depth setting without re-tooling.
• Left-Hand (LH) Rotation - designed specifically for left-hand spindle positions on multi-spindle boring machines, ensuring correct chip evacuation direction and clean hole entry on LH spindle stations.
• Super-Strength Steel Body - the high-strength steel shank and body resist deflection under load, contributing to straight, true holes even at the 5mm diameter where tool flex is a common concern.

Why This Product

• The through-hole point geometry is purpose-built to eliminate blowout on panel exit - a critical requirement when drilling dowel holes in furniture panels where both faces are visible or laminated.
• The P.T.F.E.-coated spiral and HW carbide head work together to handle coated panels, MDF, and chipboard - materials that rapidly dull uncoated tools - giving the drill a longer service life in production settings.
• The parallel shank with driving flat and length adjusting screw makes this drill a direct fit for standard multi-spindle CNC boring machines and panel processing centers, simplifying setup and changeover.
• Left-hand rotation ensures correct performance on LH spindle stations - using a right-hand drill on an LH spindle causes poor chip evacuation and rough bore walls, making this the correct specification for LH positions.

Specifications

• Manufacturer Part Number: 313.050.12
• Brand: CMT Orange Tools
• Diameter: 5mm
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10 x 26mm parallel shank with driving flat and length adjusting screw
• Number of Flutes: 2
• Blade Material: HW (Tungsten Carbide)
• Rotation: Left-Hand (LH)
• Sharpening Angle: Through holes 60
• Coating: P.T.F.E. on spiral portion (orange or black)
• Drill Type: Dowel Drill for Through Hole

Approved Applications

• Through-hole drilling for dowel joinery connections
• Furniture panel processing and cabinet manufacturing
• Drilling in chipboard and particle board panels
• Through-hole boring in MDF and HDF
• Through-hole drilling in hardwood and softwood
• Drilling in plywood, laminates, and coated panels
• Multi-spindle CNC boring machine operations (LH spindle positions)
• Panel processing center production runs