Product Description
CMT Four Flute Dowel Drill 6 x 50 x 85mm RH by CMT is a long-series boring tool engineered for clean, precise blind holes in solid wood, chipboard, MDF, laminates, and coated panels. Fitted with a tungsten carbide (HW) cutting head, two precision-ground carbide cutting edges, two negatively ground spurs, and four spiral flutes for rapid chip evacuation, this right-hand drill delivers the flat-bottomed, tear-free bores that furniture manufacturing, cabinet making, and panel processing demand. The 10 x 27mm parallel shank with a driving flat makes it compatible with multi-spindle CNC boring machines, boring centers, and boring machines fitted with an adapter or chuck.
Key Features
- HW (Tungsten Carbide) Cutting Head with Precision-Balanced Centre Point - the carbide tip maintains sharpness through extended production runs in abrasive materials such as chipboard, MDF, and laminates, reducing downtime and regrind frequency.
- 2 HW Precision-Ground Cutting Edges (Z2) - matched carbide edges ensure a consistent cutting geometry on every bore, producing flat-bottomed holes with uniform diameter across a full panel batch.
- 2 Negatively Ground Spurs (V2) - the negatively sharpened spurs score the material perimeter before the cutters engage, eliminating surface tearout and delivering clean bore walls on both uncoated and coated panel faces.
- 4 Spiral Flutes - four flutes versus a standard two-flute design double the chip-evacuation capacity, keeping the bore clear and reducing heat buildup during deep blind-hole drilling at 50mm cutting depth.
- PTFE Coating on Cutter Portion - the non-stick black or orange PTFE coating prevents pitch and adhesive buildup on the spiral, maintaining free chip flow and cutting efficiency without frequent cleaning stops.
- Super-Strength Steel Body - the HW head is bonded to a high-strength steel shank, giving the drill the rigidity needed to resist deflection in high-cycle CNC boring applications.
- 10 x 27mm Parallel Shank with Driving Flat and Length-Adjusting Feature - the standardized shank profile fits a wide range of multi-spindle heads and boring adapters, and the length-adjusting function allows precise depth setting without additional tooling.
- Right-Hand Rotation (RH) - matches the standard spindle direction of virtually all CNC panel boring machines, ensuring out-of-the-box compatibility with no spindle re-programming.
Why This Product
- The 85mm overall length in the long-series format, combined with a 50mm cutting height, allows deep blind holes for dowel connections in thick panel stock - tasks where a short-series drill would fall short.
- Four spiral flutes paired with PTFE coating address two of the most common causes of bore-quality failure in production environments: chip packing and resin buildup - both handled passively without operator intervention.
- Negatively ground spurs score the surface fiber before the carbide cutters advance, making this drill suitable for coated panels and laminates where surface tearout would cause reject parts.
- The combination of a carbide (HW) cutting head, precision-balanced centre point, and matched Z2 edges delivers repeatable bore location accuracy - critical in dowel-jointed furniture and cabinet carcass assembly where misaligned holes cause fitment failures.
Specifications
- Manufacturer Part Number: 373.060.11
- Brand: CMT Orange Tools
- Product Type: Four Flute Dowel Drill
- Diameter: 6mm
- Cutting Height: 50mm
- Total Length: 85mm
- Shank: 10 x 27mm parallel shank with driving flat and length adjusting
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Number of Flutes: 4
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Body Material: Super-strength steel
- Coating: Black or orange PTFE on cutter portion
- Rotation: Right-hand (RH)
Approved Applications
- Drilling blind holes for dowel connections in furniture and cabinet carcass assembly
- Panel drilling in chipboard, MDF, HDF, and coated panels
- Boring in solid hardwood and softwood
- Boring in plywood and laminates
- Furniture manufacturing and cabinet making production lines
- Use in multi-spindle CNC boring machines
- Use in CNC boring centers and panel processing centers
- Use in boring machines fitted with an adapter or chuck
Frequently Asked Questions
What is the purpose of the four flutes on this dowel drill compared to a standard two-flute design?
The four spiral flutes provide twice the chip-evacuation capacity of a standard two-flute drill. In deep blind-hole applications at the full 50mm cutting depth, this keeps the bore clear of waste material, reduces heat buildup, and helps maintain consistent hole quality throughout a production run.
Why are negatively ground spurs important when drilling coated panels or laminates?
Negatively ground spurs score the surface fiber or coating around the bore perimeter before the carbide cutting edges advance into the material. This pre-scoring action severs the surface cleanly rather than tearing it, which is essential for producing reject-free bores in laminates, coated panels, and HDF where surface tearout is a common quality issue.
What does the PTFE coating on the cutter portion do during use?
The black or orange PTFE coating applied to the spiral cutter portion acts as a non-stick layer that prevents pitch and adhesive residue from bonding to the tool surface. This keeps chip flow unrestricted and reduces the frequency of cleaning stops, maintaining cutting efficiency across extended production cycles in materials such as chipboard and MDF.
Is the 10 x 27mm parallel shank compatible with standard CNC multi-spindle boring heads?
Yes. The 10 x 27mm parallel shank with a driving flat is a widely used interface on multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines fitted with an adapter or chuck. The length-adjusting feature built into the shank also allows precise depth setting directly at the spindle without additional tooling.
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