Product Description
CMT 311.065.11 Dowel Drill 6.5 x 35 x 70mm RH by CMT is a precision-engineered, right-hand rotation boring tool designed for drilling clean, flat-bottom blind holes in panel processing, furniture manufacturing, and cabinet making. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this 6.5mm diameter dowel drill delivers accurate, repeatable dowel joints in solid wood, chipboard, MDF, and laminates. The spiral portion is coated with P.T.F.E. to reduce friction and resist pitch buildup, making it a reliable choice for high-volume boring operations on multi-spindle CNC machines and panel processing centers.
Key Features
- HW (Tungsten Carbide) Cutting Head - carbide construction maintains sharp cutting edges through extended production runs in abrasive materials like MDF, chipboard, and coated panels, reducing downtime from frequent tool changes.
- 2 Precision-Ground HW Cutting Edges - dual cutting edges produce smooth, consistent bore walls in every pass, resulting in tight-fitting dowel joints with minimal sanding or finishing required.
- 2 Negatively Ground Spurs (V2) - negatively sharpened spurs score the material perimeter before the main cutters engage, preventing tear-out and delivering clean hole edges on laminates and coated panels.
- P.T.F.E.-Coated Spiral Flutes - the orange or black P.T.F.E. coating on the spiral portion prevents resin, glue, and pitch from adhering, keeping the tool performing like new and extending overall tool life.
- Precision-Balanced Centre Point - the precision ground centre point registers accurately on the workpiece before cutting begins, ensuring hole placement is exact - critical for aligned dowel connections in panel furniture.
- 2 Spiral Flutes - twin flutes efficiently evacuate chips and dust from the bore, reducing heat buildup and keeping blind holes clean throughout the cut.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 30mm shank includes a driving flat and length adjusting screw for secure, slip-free mounting and easy depth setting in boring machine spindles or adapters.
- Right-Hand (RH) Rotation - matches standard spindle rotation on the vast majority of CNC boring centers and multi-spindle machines, ensuring straightforward, no-adapter installation.
- 6.5mm Diameter with 35mm Cutting Height - sized to bore the correct diameter and depth for standard 6.5mm dowel pins, supporting accurate furniture panel assembly without modification.
Why This Product
- The combination of a carbide cutting head and negatively ground spurs makes this drill well-suited for challenging materials like laminates and coated panels where surface tear-out is a common problem with ordinary twist drills.
- The P.T.F.E.-coated spiral resists pitch and adhesive buildup, which is especially valuable in production environments where drilling coated or pre-glued panels causes rapid fouling of uncoated tools.
- At 70mm total length, this long-series dowel drill provides the reach needed for deeper boring applications and accommodates depth-adjustment settings that a standard-length drill cannot achieve.
- The parallel shank with driving flat and length adjusting screw ensures the tool seats and locks reliably in multi-spindle boring machine spindles, eliminating slippage and keeping production runs consistent.
Specifications
- Manufacturer Part Number: 311.065.11
- Brand: CMT Orange Tools
- Diameter: 6.5mm
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10 x 30mm (parallel shank with driving flat and length adjusting screw)
- Number of Flutes: 2
- Number of Spurs: 2
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Rotation: Right-Hand (RH)
- Coating: P.T.F.E. (orange or black) on spiral portion
Approved Applications
- Drilling blind holes for dowel connections in furniture panels
- Panel drilling on CNC boring centers and multi-spindle boring machines
- Cabinet making and furniture manufacturing production runs
- Boring in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels
- Use with boring machine adapters or chucks where a parallel shank with driving flat is accepted
Frequently Asked Questions
What is the purpose of the negatively ground spurs on this dowel drill?
The 2 negatively ground spurs score the perimeter of the hole before the main carbide cutting edges remove material. This pre-scoring action severs surface fibers cleanly, preventing chip-out and tear-out on laminates, veneered boards, and coated panels where a clean entry is critical for a professional finish.
Why does this drill have a P.T.F.E. coating on the spiral?
The P.T.F.E. coating on the spiral flutes creates a low-friction surface that resists the adhesion of pitch, resin, and glue - materials that commonly build up when boring chipboard, MDF, and pre-finished panels. By preventing this buildup, the coating helps maintain cutting performance and extends the working life of the tool between sharpenings.
What machines is this dowel drill compatible with?
This drill is designed for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers that accept a parallel shank. The 10 x 30mm parallel shank includes a driving flat and a length adjusting screw for secure, repeatable depth setting in standard boring machine spindles or adapters and chucks.
How does the 70mm total length differ from a standard-length dowel drill?
This long-series 70mm overall length provides additional reach compared to shorter dowel drills. The extended length allows for greater depth-adjustment range on boring machine spindles and is suited for applications requiring deeper boring or where the spindle geometry demands more tool projection. The 35mm cutting height accommodates the full bore depth needed for standard dowel joinery.
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