Product Description
CMT 311.047.11 Dowel Drill - 3/16" x 35 x 70mm Right-Hand by CMT is a precision-engineered, carbide-tipped boring tool built for fast, clean blind-hole drilling in panel processing and furniture manufacturing. Designed as a long-series dowel drill with a 70mm overall length and a 35mm cutting height, it produces accurate, flat-bottom holes for dowel joinery in solid wood, chipboard, MDF, laminates, and coated panels. The right-hand rotation, parallel shank with driving flat, and length-adjusting screw make it a reliable choice for multi-spindle CNC boring machines, boring centers, and panel processing equipment.
Key Features
- 2-flute tungsten carbide (HW) cutting head - delivers consistent, long-lasting cutting performance in demanding panel processing environments, reducing tool change frequency and downtime.
- 2 precision-ground cutting edges - ensures accurate hole geometry and a clean, flat bottom ideal for tight-tolerance dowel connections in cabinet and furniture production.
- 2 negatively ground spurs (V2 configuration) - scores the material perimeter cleanly before the main cutters engage, preventing chipout and producing smooth bore walls even in chipboard, laminates, and coated panels.
- PTFE-coated spiral portion (orange or black) - reduces friction and prevents pitch, resin, and glue buildup on the flutes, keeping the drill running cleanly and extending service life between sharpenings.
- Super-strength steel body - provides the rigidity and vibration resistance needed to maintain hole position accuracy during high-cycle production boring.
- Precision balanced centre point - self-centers on the workpiece instantly, eliminating wander at entry and ensuring repeatable hole placement hole after hole.
- 2 spiral flutes - efficiently evacuate chips and dust from the bore, reducing heat buildup and keeping the cut clean through the full 35mm cutting depth.
- Parallel shank (10x30mm) with driving flat and length-adjusting screw - provides secure, non-slip seating in boring machine chucks and allows precise depth setting without additional tooling.
- Right-hand rotation - compatible with standard right-hand boring machine spindles found on most multi-spindle CNC boring and panel processing centers.
Why This Product
- The long-series 70mm overall length with a 35mm cutting height makes this drill the right choice when deeper blind holes are required for panel assemblies - situations where a standard-series drill cannot reach the specified depth without repositioning.
- The combination of negatively ground spurs and precision-ground carbide cutting edges addresses one of the most common problems in panel boring: tearout at the hole entrance on laminates and coated panels, delivering production-ready surface quality without secondary cleanup.
- PTFE coating on the spiral flutes directly reduces the adhesion of adhesives and resins encountered in chipboard and MDF drilling, meaning longer intervals between tool cleaning and fewer interruptions on high-volume runs.
- The 10x30mm parallel shank with driving flat and length-adjusting screw provides a secure, adjustable fit in boring machine chucks, giving operators repeatable depth control across multiple spindles without time-consuming manual measurement.
Specifications
- Manufacturer Part Number: 311.047.11
- Brand: CMT Orange Tools
- Diameter: 3/16"
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10x30mm
- Number of Flutes: 2
- Number of Spurs: 2
- Number of Teeth: 2
- Spur Grind: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Rotation: Right-hand (RH)
- Shank Type: Parallel shank with driving flat and length adjusting screw
- Coating: PTFE (orange or black) on spiral portion
Approved Applications
- Blind hole drilling for dowel connections and panel joinery
- Furniture manufacturing and cabinet making
- Panel drilling in chipboard, MDF, HDF, and coated panels
- Drilling in solid hardwood and softwood
- Boring in plywood and laminates
- Use in multi-spindle CNC boring machines and boring centers
- Use in panel processing centers with boring machine adapter or chuck
Frequently Asked Questions
What is the difference between this long-series dowel drill and a standard-series dowel drill?
This drill has a 70mm total length with a 35mm cutting height, placing it in the long-series category. This longer geometry allows it to bore deeper blind holes in panel assemblies where a shorter tool would not reach the required depth. The shank remains 10x30mm with a driving flat and length-adjusting screw for secure, adjustable chuck seating.
What does "negatively ground spurs" mean, and why does it matter for my application?
Negatively ground spurs are configured to score the perimeter of the hole before the main cutting edges remove material. This scribing action severs the surface fibers cleanly before the bulk of the cut occurs, which prevents tearout and delamination at the entrance of the bore - critical when drilling laminates, coated panels, and chipboard where surface quality is important.
What materials is this dowel drill designed to cut?
The carbide (HW) cutting head and PTFE-coated spiral make this drill suitable for solid wood (hardwood and softwood), chipboard, MDF, HDF, plywood, laminates, coated panels, and plastics. The PTFE coating specifically helps prevent adhesive and resin buildup when boring in engineered wood products such as chipboard and MDF.
Is this drill compatible with both CNC boring centers and manual boring machines?
Yes. The 10x30mm parallel shank with a driving flat and length-adjusting screw is designed for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers. It can also be used in conventional boring machines equipped with a suitable adapter or chuck that accepts a 10mm parallel shank with driving flat.
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