Product Description
CMT 314.060.12 Dowel Drill for Through Holes - 6 x 35 x 70mm Left-Hand Rotation is a precision-engineered, carbide-tipped boring tool from CMT, built for clean, accurate through-hole drilling in panel processing, furniture manufacturing, and dowel joinery applications. Designed with a 2-flute spiral geometry and a hardwood-grade (HW) cutting head, this left-hand rotating drill produces consistent, blowout-free through holes in chipboard, MDF, solid wood, plywood, laminates, and coated panels. The 6mm cutting diameter and 35mm cutting height make it well-suited for panels requiring full-penetration dowel bores, while the 70mm overall length provides the reach needed in multi-spindle and CNC boring machine setups.
Key Features
- HW (Tungsten Carbide) Cutting Head - delivers long-lasting edge retention when drilling abrasive materials like chipboard, MDF, and laminated panels, reducing the frequency of tool changes during high-volume production runs.
- 2 Precision-Ground Cutting Edges (Z2) - both flutes are ground to exact tolerances, producing clean bore walls and consistent hole geometry that ensures tight dowel fits and repeatable joinery quality.
- 2 Spiral Flutes with PTFE Coating - the orange or black P.T.F.E. coating on the spiral portion prevents pitch, resin, and glue buildup, keeping the flutes clear during extended use and maintaining chip evacuation efficiency.
- Precision-Balanced Centre Point - the HW head features a precision-balanced centre point that starts each bore accurately, eliminating walk and ensuring hole placement is on-center even at high spindle speeds.
- Left-Hand (LH) Rotation - engineered for left-hand spindle configurations found on multi-spindle CNC boring machines and panel processing centers, making this drill a direct-fit replacement for LH boring positions.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 26mm shank provides a secure, non-slip seating in boring machine chucks, and the length adjusting screw allows precise depth setting without measuring jigs.
- Super-Strength Steel Body - the steel body resists flex and vibration under load, contributing to straight, true bores even in dense panel materials.
- Through-Hole Geometry - the drill geometry is optimized for full-penetration drilling up to the 35mm cutting height, preventing blowout at the exit face and delivering clean openings on both surfaces of the workpiece.
Why This Product
- The LH rotation and 10 x 26mm parallel shank with driving flat make this drill a direct-fit solution for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers - no adapter needed for compatible machines.
- The combination of a precision-balanced HW centre point and two precision-ground cutting edges produces clean entry and exit holes in through-drilling applications, reducing the risk of surface tearout on finished or laminated panels.
- The PTFE-coated spiral flutes actively resist resin and adhesive buildup during production use, which helps maintain cutting performance and extend intervals between cleanings or tool replacements in chipboard and MDF drilling.
- With a 70mm overall length and 35mm cutting height, this drill is sized for through-hole boring in standard panel thicknesses commonly encountered in furniture and cabinet component manufacturing.
Specifications
- Manufacturer Part Number: 314.060.12
- Brand: CMT Orange Tools
- Diameter: 6mm
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10 x 26mm
- Number of Teeth: 2
- Rotation: LH (Left-Hand)
- Material: HW (Tungsten Carbide)
- Sharpening Type: Through holes 60
- Application Type: Through hole dowel drilling
Approved Applications
- Through-hole drilling for dowel connections and panel joinery
- Furniture manufacturing and cabinet component processing
- Panel processing in chipboard, MDF, HDF, and coated panels
- Through-hole boring in solid hardwood and softwood
- Plywood and laminate through-hole drilling
- Multi-spindle CNC boring machine operations (LH spindle positions)
- CNC boring center and panel processing center applications
Frequently Asked Questions
What is the difference between this through-hole dowel drill and a blind-hole dowel drill?
This drill is specifically designed for through-hole boring - it penetrates fully through the panel or workpiece, producing clean openings on both the entry and exit faces. The geometry and flute design are optimized to prevent blowout at the exit surface, which is a common issue when using standard twist drills for this purpose. Blind-hole dowel drills, by contrast, are designed to stop at a set depth and produce a flat-bottom hole.
What shank size does this dowel drill use, and how is it secured in the machine?
This drill uses a 10 x 26mm parallel shank with a driving flat and a length adjusting screw. The driving flat provides a positive, non-slip connection in the spindle chuck, while the length adjusting screw allows the boring depth and tool projection to be set precisely without the need for separate gauging tools.
Which direction does this drill rotate, and why does that matter?
This is a left-hand (LH) rotation drill. Multi-spindle boring machines and CNC boring centers typically use a combination of right-hand and left-hand spindles positioned across the width of the machine. Selecting the correct rotation - LH or RH - for each spindle position is critical to ensure the cutting edges engage the material correctly and produce clean holes. Using the wrong rotation will result in poor cut quality and accelerated tool wear.
What materials is this dowel drill rated to cut?
The HW (tungsten carbide) cutting head is suited for drilling chipboard, MDF, HDF, solid hardwood, softwood, plywood, laminates, and coated panels. The PTFE-coated spiral flutes help manage chip and debris evacuation across these material types, including abrasive engineered wood products that can cause rapid wear on uncoated tooling.
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