Product Description
CMT Two Flute Dowel Drill - 10 x 44 x 77mm Left-Hand Rotation is a precision-engineered left-hand rotating boring tool designed for clean, accurate blind-hole drilling in furniture panels, cabinetry components, and solid wood assemblies. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this 10mm dowel drill delivers flat-bottom holes and tear-free bore walls in chipboard, MDF, hardwood, softwood, plywood, laminates, and coated panels. The 77mm overall length makes it well-suited for deep blind-hole applications in thick panel stock, while the PTFE coating on the cutter portion prevents pitch and glue buildup during extended production runs.
Key Features
- HW (Tungsten Carbide) Cutting Head with 2 Precision Ground Edges (Z2) - carbide construction maintains a sharp cutting edge through high-volume panel drilling, reducing downtime for bit changes and regrinding intervals.
- 2 Negatively Ground Spurs (V2) - the negative grind geometry scores the panel surface cleanly before the cutters remove material, producing flat-bottom holes with minimal tearout on coated panels, laminates, and veneered surfaces.
- PTFE Coating on the Cutter Portion - the non-stick orange or black coating repels resin, pitch, and adhesive during drilling, keeping the bit clean and maintaining cutting performance without frequent cleaning stops.
- Precision Balanced Centre Point - the HW centre point self-locates at the bore target before the spurs engage, keeping the drill on position and eliminating hole wander on CNC boring centers and multi-spindle machines.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 30mm shank seats securely in boring machine chucks or adapters and allows precise depth adjustment without re-fixtured setups, improving hole-depth repeatability across production runs.
- Left-Hand (LH) Rotation - configured for left-hand spindle positions on multi-spindle CNC boring machines and panel processing centers, enabling correct cutting geometry and clean chip evacuation on LH spindles.
- 77mm Total Length - the long-series format provides the reach needed for deep blind holes in thick panels while maintaining rigidity to prevent deflection at depth.
Why This Product
- The 2 negatively ground spurs combined with an HW precision centre point make this dowel drill a reliable choice for furniture manufacturers who demand clean, splinter-free entry holes in melamine-coated chipboard and high-pressure laminates - materials that punish dull or poorly geometry-matched tooling immediately.
- The PTFE non-stick cutter coating directly addresses pitch and glue buildup that shortens tool life in MDF and resin-rich softwood drilling, helping production shops maintain consistent hole quality across large batch runs without frequent cleaning or replacement cycles.
- Left-hand rotation availability means this drill is a purpose-built solution for LH spindle positions on multi-spindle CNC boring machines and panel processing centers - not a workaround - delivering correct cutting action, proper chip flow, and full cutting geometry on every LH station.
- The 10 x 30mm parallel shank with driving flat and length adjusting screw provides the secure drive engagement and repeatable depth setting that cabinet making and panel drilling operations require when running high volumes of identical dowel joint holes.
Specifications
- Manufacturer Part Number: 362.100.12
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 44mm
- Total Length: 77mm
- Shank: 10 x 30mm (parallel shank with driving flat)
- Number of Flutes: 2
- Number of Spurs: 2
- Spur Grind: Negatively ground spurs
- Rotation: Left-Hand (LH)
- Blade Material: HW (Tungsten Carbide)
- Body Material: Super-strength steel
- Coating: PTFE (orange or black) on cutter portion
Approved Applications
- Blind hole drilling for dowel joinery connections
- Panel drilling in furniture manufacturing
- Cabinet making and case goods production
- Drilling in chipboard, MDF, HDF, and coated panels
- Drilling in hardwood, softwood, plywood, and laminates
- Use on multi-spindle CNC boring machines (left-hand spindle positions)
- Use on CNC boring centers and panel processing centers
- Use on boring machines with adapter or chuck
Frequently Asked Questions
Why does this dowel drill use left-hand (LH) rotation, and how do I know if I need it?
Multi-spindle boring machines and CNC panel processing centers use both right-hand and left-hand spindles simultaneously to drill rows of holes across a panel. Left-hand spindle positions require a left-hand rotating bit so the cutting edges engage the material correctly and chips evacuate cleanly. If your machine has LH spindle stations, this is the correct drill for those positions. Right-hand spindles require a separate RH version.
What does the PTFE coating on the cutter portion do during use?
The PTFE non-stick coating applied to the cutter portion of the drill prevents resin, pitch, and adhesive residue from bonding to the tool surface during drilling. This is especially relevant when boring MDF, chipboard, or resin-rich wood composites, where buildup on uncoated tools can cause friction, heat, and degraded hole quality. The coating helps the drill shed debris and maintain cutting performance across extended production runs.
What type of holes does this drill produce, and what are the negatively ground spurs for?
This is a dowel drill designed to produce flat-bottom blind holes for dowel joint connections. The 2 negatively ground spurs score the panel surface cleanly around the perimeter of the hole before the main cutting edges remove material. This spur geometry is specifically engineered to prevent tearout, chipping, and fiber lifting at the hole entry - critical when drilling coated panels, laminates, veneered chipboard, or melamine surfaces where a clean, sharp edge at the bore opening is required.
What machines and shank systems is this drill compatible with?
The 10 x 30mm parallel shank with a driving flat is the standard format for boring machine tooling. It is compatible with multi-spindle CNC boring machines, CNC boring centers, and panel processing centers that accept 10mm parallel shank bits, as well as boring machines fitted with a suitable adapter or chuck. The included length adjusting screw allows precise depth setting directly at the spindle without separate depth-stop tooling.
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