Product Description
CMT 309.100.11 Dowel Drill - 10 x 43 x 70mm Right-Hand is a precision-engineered boring tool from CMT, purpose-built for dowel hole production in furniture manufacturing, cabinet making, and panel processing. With a 10mm cutting diameter, 43mm cutting height, and 70mm overall length, this long-series dowel drill excels at producing clean, flat-bottom blind holes in solid wood, chipboard, MDF, and laminates. Carbide-tipped tungsten construction combined with a PTFE-coated cutter body makes this tool a reliable choice for high-volume production environments and multi-spindle boring machines alike.
Key Features
- Tungsten Carbide (HW) Cutting Head with Precision-Balanced Centre Point - delivers accurate bore positioning and consistent hole depth, reducing setup errors on panel boring lines.
- 2 Precision-Ground Cutting Edges (Z2) - dual carbide cutting edges work together to produce smooth, flat-bottomed holes suitable for tight-tolerance dowel joinery.
- 2 Negatively Ground Spurs (V2) - score the material perimeter cleanly before the cutters engage, preventing tearout and delamination on coated panels and laminates.
- 4 Spiral Flutes - efficiently evacuate chips and dust from the bore during drilling, reducing heat buildup and keeping the hole walls clean for a better dowel fit.
- Black or Orange PTFE Coating on the Cutter Portion - non-stick surface resists pitch and adhesive buildup, extending tool life between sharpenings and maintaining cutting performance over repeated use.
- Super-Strength Steel Body - provides rigidity and resistance to deflection under load, maintaining bore straightness even at higher feed rates.
- 10 x 20mm Parallel Shank with Driving Flat and Length Adjusting Screw - positive drive engagement prevents slippage in the spindle and allows precise depth adjustment without removing the tool from the machine.
- Right-Hand (RH) Rotation - compatible with standard right-hand boring machine spindles used across CNC boring centers and multi-spindle panel processing equipment.
- 70mm Overall Length (Long Series) - accommodates thicker panel stock and deeper blind hole requirements that shorter-series drills cannot reach.
Why This Product
- The negatively ground spurs and carbide cutting edges work in sequence to score, then cut - producing clean entry holes with no tearout or rough bore walls, which is critical when drilling coated panels, MDF, and laminates for furniture assembly.
- The PTFE-coated cutter portion resists pitch and glue buildup during production runs, meaning fewer interruptions for cleaning or tool changes in high-throughput cabinet and furniture manufacturing environments.
- The 43mm cutting height and 70mm overall length make this drill suitable for thicker panel stock applications where standard-length dowel drills fall short, expanding the range of panel thicknesses a single tool can handle.
- The parallel shank with driving flat and length adjusting screw provides secure, repeatable seating in multi-spindle CNC boring machines and boring centers, reducing runout and ensuring consistent hole-to-hole accuracy across large production batches.
Specifications
- Manufacturer Part Number: 309.100.11
- Brand: CMT Orange Tools
- Product Type: Dowel Drill
- Diameter: 10mm
- Cutting Height: 43mm
- Total Length: 70mm
- Shank: 10 x 20mm
- Number of Cutting Edges: 2
- Number of Spurs: 2
- Number of Flutes: 4
- Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Rotation: Right-Hand (RH)
Approved Applications
- Drilling blind holes for dowel connections in furniture and cabinet assembly
- Panel boring on chipboard, MDF, HDF, and laminates
- Dowel hole production in solid hardwood and softwood
- Boring coated and laminate-faced panels requiring clean, tearout-free entry
- Use on multi-spindle CNC boring machines and CNC boring centers
- Use on panel processing centers and boring machines with adapter or chuck
Frequently Asked Questions
What is the difference between negatively ground spurs and standard spurs on a dowel drill?
Negatively ground spurs are angled to score the material perimeter cleanly before the main cutting edges remove material. This sequencing prevents the surface fibers from lifting or tearing, which is especially important when boring laminates, coated panels, and MDF where surface quality directly affects the appearance of the finished joint.
Why does this dowel drill have 4 flutes if it only has 2 cutting edges?
The 4 spiral flutes are dedicated chip and dust evacuation channels, separate from the 2 carbide cutting edges (Z2) that do the actual cutting. More flutes mean faster, more efficient clearing of material from the bore, which reduces heat and keeps the hole walls clean - particularly important during high-volume production runs on chipboard and MDF.
What does the PTFE coating on the cutter portion do in practice?
The PTFE coating creates a non-stick surface on the cutter body. During drilling in chipboard, MDF, and resin-bonded panels, pitch and adhesive residue tends to accumulate on uncoated tools, increasing friction and reducing cut quality. The PTFE coating resists this buildup, helping maintain consistent cutting performance and extending the interval between sharpenings.
How does the parallel shank with driving flat and length adjusting screw benefit production use?
The driving flat provides positive rotational engagement between the drill and the spindle, preventing slippage under load. The length adjusting screw allows the operator to set and repeat precise boring depths without removing the tool from the machine, which is a significant time saver when running multiple panels to the same specification on a CNC boring center or multi-spindle boring machine.
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