Product Description
CMT 306.060.11 Dowel Drill 6 x 30 x 55.5mm RH by CMT is a precision-engineered carbide-tipped boring tool built for high-speed blind hole drilling in furniture panels, cabinet components, and solid wood assemblies. Featuring a right-hand rotation and a robust HW (carbide) cutting head with 2 precision-ground cutting edges and 2 negatively ground spurs, this dowel bit delivers clean, accurate bores suited to demanding CNC production environments. Whether you are running a multi-spindle boring machine or a CNC machining center, the 6mm diameter and 8x20mm shank make this drill a dependable choice for dowel joinery, panel processing, and high-volume cabinet manufacturing.
Key Features
- HW (carbide) cutting head with precision-balanced centre point - maintains accurate hole positioning at high spindle speeds, reducing runout and improving bore-to-bore consistency across production runs.
- 2 precision-ground HW cutting edges (Z2) - hardwearing carbide edges stay sharp longer than high-speed steel alternatives, meaning fewer tool changes and lower downtime during production.
- 2 negatively ground spurs (V2) - shear the wood fibers cleanly before the cutting edges engage, producing flat-bottomed blind holes with smooth bore walls and minimal tearout on chipboard, MDF, and laminates.
- Super-strength steel body - provides a rigid, vibration-resistant platform for the carbide head, helping maintain cutting accuracy even at the high RPMs typical of CNC boring centers.
- Right-hand (RH) rotation - compatible with standard right-hand CNC boring spindles, making it a direct-fit replacement or addition to existing multi-spindle configurations.
- 8x20mm parallel shank - fits standard CNC boring machine chucks and adapter systems without modification, simplifying tool setup and changeover.
- 30mm cutting height with 55.5mm total length (short series) - compact overall length minimizes spindle overhang, improving rigidity and reducing vibration during blind hole operations.
Why This Product
- The combination of 2 HW cutting edges and 2 negatively ground spurs produces clean entry and flat-bottom blind holes - critical for dowel joints that require precise depth and a flush surface for glue-up in furniture and cabinet assembly.
- The 6mm diameter matches the most common metric dowel pin sizing used in flat-pack and RTA furniture production, making this drill a practical fit for high-volume panel boring applications.
- The carbide (HW) head material is specifically suited to abrasive engineered wood products like MDF, HDF, chipboard, and coated panels - materials that quickly wear out conventional steel drills - giving you extended tool life in the workloads where it matters most.
- The short-series 55.5mm overall length and rigid 8x20mm shank are sized for multi-spindle CNC boring machines, allowing tight spindle pitch spacing and consistent performance across panel drilling centers.
Specifications
- Manufacturer Part Number: 306.060.11
- Brand: CMT Orange Tools
- Diameter: 6mm
- Cutting Height: 30mm
- Total Length: 55.5mm
- Shank: 8x20mm
- Rotation: Right-hand (RH)
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (carbide-tipped)
- Product Type: Dowel Drill
Approved Applications
- Blind hole drilling for dowel connections
- Panel drilling on chipboard, MDF, HDF, and coated panels
- Furniture manufacturing and flat-pack panel processing
- Cabinet making and casework assembly
- Solid wood, hardwood, and softwood boring
- Plywood and laminate panel drilling
- High-speed CNC boring center production runs
- Multi-spindle boring machine applications
Frequently Asked Questions
What is the difference between the cutting edges and the spurs on this dowel drill?
This drill has 2 precision-ground HW cutting edges (Z2) that remove material from the bore, and 2 negatively ground spurs (V2) that score the wood fibers at the perimeter of the hole before the cutting edges engage. This two-element design produces cleaner hole walls and sharper entry points - especially important when boring chipboard, laminates, and coated panels where surface tearout is a concern.
What machines is this dowel drill compatible with?
The 8x20mm shank is designed for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers equipped with standard chucks or adapter systems that accept this shank size. It is a right-hand (RH) rotation tool and must be used in a spindle configured for right-hand rotation.
Is this drill suitable for drilling MDF and chipboard, or only solid wood?
The HW (carbide) cutting head is well suited to abrasive engineered wood materials including MDF, HDF, chipboard, and coated or laminated panels, as well as solid hardwood, softwood, and plywood. The negatively ground spurs help manage the tendency of these materials to chip or splinter at the bore entry.
Can this bit be resharpened after the cutting edges wear?
Yes. The HW (carbide) construction of the cutting head is designed to withstand repeated resharpening. The negatively ground spurs and precision-ground cutting edges can be reground by a qualified sharpening service, extending the usable life of the tool through multiple production cycles.
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