Product Description
CMT Dowel Drill for Through Holes - 5/16" x 35 x 70mm Right-Hand is a precision-engineered boring tool designed for clean, accurate through-hole drilling in panel processing, furniture manufacturing, and dowel joinery applications. Built with a tungsten carbide (HW) cutting head and a super-strength steel body, this right-hand rotation drill produces consistent, blowout-free exit holes in chipboard, MDF, hardwood, softwood, plywood, and coated panels up to 30mm thick. The 2-flute spiral design with a PTFE-coated body keeps the cutting path clear of pitch and resin, delivering repeatable results across high-volume production runs.
Key Features
- HW (tungsten carbide) cutting head with precision-balanced centre point - maintains accurate hole positioning and produces flat-bottomed entry that reduces wandering, critical for tight-tolerance dowel alignment in furniture assembly.
- 2 precision-ground cutting edges (Z2) - dual flutes distribute cutting load evenly, resulting in smooth bore walls and clean hole geometry in both solid wood and engineered panels.
- 2 spiral flutes - efficiently evacuate chips and waste material from the bore during through-hole drilling, reducing heat buildup and extending carbide edge life.
- PTFE coating on the spiral portion - the orange or black non-stick coating prevents pitch, glue, and resin adhesion, reducing cleaning intervals and keeping the drill running smoothly in adhesive-heavy laminate and coated panel work.
- Super-strength steel body - provides the rigidity and impact resistance needed for multi-spindle CNC boring machines and high-cycle panel processing centers without deflection.
- Parallel shank with driving flat and length-adjusting screw - the 10 x 26mm shank locks securely in boring machine spindles, while the adjusting screw allows precise depth setting for repeatable through-hole positioning.
- Right-hand (RH) rotation - matches the standard spindle direction of most CNC boring centers and multi-spindle machines, ensuring immediate compatibility without special setup.
Why This Product
- Engineered specifically for through-hole drilling - unlike general-purpose twist drills, this 70mm long-series dowel drill is purpose-built to pass completely through panels, preventing the blowout and tearout at the exit face that degrades joint quality in furniture production.
- Carbide head with PTFE spiral coating works together to protect tool life - the HW tip maintains edge sharpness through abrasive materials like MDF and chipboard, while the non-stick PTFE coating keeps the flutes from clogging with resin or adhesive during continuous production cycles.
- Designed for multi-spindle CNC boring machines and boring centers - the 10 x 26mm parallel shank with driving flat and length-adjusting screw is the industry-standard interface for automated panel boring equipment, making this drill a direct drop-in for production lines processing cabinet panels, flat-pack furniture components, and shelving systems.
- 5/16" diameter at 35mm cutting height accommodates standard dowel connections - the cutting geometry and diameter are matched to common furniture dowel sizing, delivering properly sized bores for secure, tight-fitting joints without post-processing or reaming.
Specifications
- Manufacturer Part Number: 314.080.11
- Brand: CMT Orange Tools
- Diameter: 5/16"
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10 x 26mm (parallel shank with driving flat and length-adjusting screw)
- Number of Cutting Edges: 2 (Z2)
- Number of Flutes: 2
- Rotation: Right-Hand (RH)
- Blade Material: HW (tungsten carbide)
- Sharpening: Through holes 60
Approved Applications
- Through-hole drilling for dowel connections
- Panel processing in furniture manufacturing
- Cabinet component boring
- Flat-pack and ready-to-assemble furniture production
- Drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers
- Use in boring machines with an adapter or chuck
Frequently Asked Questions
What is the difference between this through-hole dowel drill and a blind-hole dowel drill?
This drill is designed specifically for through-hole boring - it passes completely through the panel material rather than stopping at a set depth. The 70mm total length and 35mm cutting height allow it to bore cleanly through panels without blowout at the exit face, which is essential for through-dowel connections and aligned joint systems in furniture panels.
What machines are compatible with this 5/16" dowel drill?
This drill uses a 10 x 26mm parallel shank with a driving flat and length-adjusting screw, which is the standard interface for multi-spindle CNC boring machines, CNC boring centers, and panel processing centers. It can also be used in boring machines equipped with a compatible adapter or chuck.
What does the PTFE coating on the spiral do?
The orange or black PTFE coating on the spiral portion of the drill acts as a non-stick barrier that prevents pitch, resin, and adhesive buildup in the flutes. This is particularly useful when boring through laminates, coated panels, or materials bonded with adhesives, as it reduces friction and keeps chip evacuation efficient throughout the drilling cycle.
Is this drill right-hand or left-hand rotation, and why does it matter?
This drill is right-hand (RH) rotation, which means it cuts when spinning clockwise when viewed from above. Most standard CNC boring centers and multi-spindle boring machines use right-hand spindle rotation as their default configuration, so this drill will be compatible with the majority of production boring equipment without requiring special adapters or reversed-spindle setups.
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