CMT 314.070.12 Dowel Drill for Through Hole - 7 x 35 x 70mm Left-Hand is a precision-engineered, carbide-tipped boring tool built for clean, accurate through-hole drilling in panel processing and furniture manufacturing. Designed specifically for left-hand rotation CNC boring machines and multi-spindle boring centers, this 7mm dowel drill bores consistent, splinter-free through holes for dowel joinery in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels. The two-flute spiral design and HW (tungsten carbide) cutting head make it a reliable choice for high-volume production environments where hole quality and tool longevity matter.

Key Features

• HW (Tungsten Carbide) Cutting Head with Precision Balanced Centre Point - delivers accurate hole location and clean entry on every pass, reducing workpiece rejection rates in tight-tolerance furniture production.
• 2 Precision Ground Cutting Edges (Z2) - two sharp, precision-ground flutes remove material efficiently while producing smooth bore walls, minimizing the need for secondary finishing on dowel holes.
• Super-Strength Steel Body - the robust steel shank and body resist flex and vibration during high-cycle boring operations, extending tool life and maintaining hole consistency over long production runs.
• PTFE-Coated Spiral Flutes - the orange or black PTFE coating on the spiral portion prevents pitch and glue buildup, keeping the bit running freely and reducing downtime for cleaning or tool changes.
• Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 26mm shank with driving flat and length adjusting screw ensures secure, slip-free seating in boring machine chucks and adapters, allowing precise depth setting without guesswork.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle positions on multi-spindle boring machines, ensuring correct cutting geometry and chip evacuation on LH stations.
• 70mm Total Length with 35mm Cutting Height - the long-series geometry allows through-hole drilling in panels up to approximately 35mm deep, covering standard panel thicknesses used in cabinet and furniture construction.

Why This Product

• The HW carbide cutting head and PTFE-coated spiral work together to produce clean through holes without blowout or tearout on exit - critical for visible dowel joints in finished furniture panels.
• With left-hand rotation geometry and a 10 x 26mm parallel shank with driving flat, this drill is purpose-built for LH spindle stations on multi-spindle CNC boring machines and boring centers - no workarounds or adapters needed for the correct spindle position.
• The length adjusting screw on the parallel shank gives machine operators repeatable depth control across production batches, reducing setup time and improving consistency when drilling dowel holes in high-volume panel runs.
• PTFE coating on the flutes actively resists pitch and adhesive buildup when drilling laminates and coated panels, keeping the tool performing at full efficiency without frequent stops to clean the bit.

Specifications

• Manufacturer Part Number: 314.070.12
• Brand: CMT Orange Tools
• Description: Dowel Drill for Through Hole 7 x 35 x 70mm LH
• Diameter: 7mm
• Cutting Height: 35mm
• Total Length: 70mm
• Shank: 10 x 26mm (parallel shank with driving flat)
• Number of Cutting Edges: 2
• Rotation: Left-Hand (LH)
• Blade Material: HW (Tungsten Carbide)
• Sharpening Type: Through holes 60

Approved Applications

• Through-hole drilling for dowel connections and dowel joinery
• Panel processing in furniture and cabinet manufacturing
• Boring through chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
• Left-hand spindle stations on multi-spindle CNC boring machines
• CNC boring centers and panel processing centers
• Boring machines fitted with a compatible adapter or chuck