Product Description
CMT Dowel Drill with Countersink - 10x15x70mm, 10x38mm Shank, Left-Hand Rotation by CMT is a precision boring tool engineered for industrial panel processing operations where drilling and countersinking must be accomplished in a single, consistent pass. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this left-hand rotation dowel drill delivers clean, flat-bottomed bores with a simultaneous countersink recess - ideal for bolt head and connector seating in chipboard, MDF, plywood, laminates, and coated panel materials. The PTFE-coated spiral flutes resist pitch and adhesive buildup, keeping the tool performing at its best through high-volume production runs.
Key Features
- HW (Tungsten Carbide) Cutting Head: hard-metal carbide construction maintains a sharp, precise edge through demanding production cycles in engineered wood, laminates, and coated panels - reducing the need for frequent tool changes.
- Super-Strength Steel Body with PTFE-Coated Spiral: the orange or black PTFE non-stick coating on the spiral portion prevents resin, pitch, and adhesive buildup, extending tool life and keeping cuts clean even in coated or pre-glued panel stock.
- Precision-Balanced Centre Point: the HW head features a precision-ground centre point that anchors the drill on contact, preventing wandering and ensuring accurate hole placement pass after pass.
- 2 Precision-Ground Cutting Edges (Z2): dual cutting edges are ground to exacting tolerances, producing smooth bore walls and flat-bottomed holes with minimal tearout in panel materials.
- 2 Ground Spurs (V2): a pair of ground spurs score the material perimeter cleanly before the cutters advance, eliminating surface tearout on laminates, veneers, and coated panels.
- 2 Spiral Flutes: dual flutes provide efficient chip evacuation during drilling, reducing heat buildup and keeping the bore clear for a cleaner finished hole.
- Integrated Countersink: the combined drill and countersink geometry creates a recessed seat for bolt heads and connectors in a single operation, eliminating a separate tooling step and improving production throughput.
- Parallel Shank with Driving Flat and Length-Adjusting Screw (10x38mm): the flat-sided shank locks positively into multi-spindle boring machines and CNC boring centers, while the length-adjusting screw allows precise depth setting without removing the tool from the machine.
- Left-Hand Rotation (LH): designed specifically for left-hand spindle positions on multi-spindle boring heads, ensuring correct cutting geometry and chip direction when used in the appropriate spindle.
Why This Product
- One-Pass Drilling and Countersinking: the integrated countersink eliminates a dedicated secondary operation, saving cycle time and reducing tooling overhead in panel furniture and cabinet manufacturing workflows.
- Engineered for Left-Hand Spindle Positions: the LH rotation geometry is purpose-built for the left-side spindles of multi-spindle CNC boring heads and boring centers - using a right-hand tool in these positions produces incorrect chip flow and poor hole quality, making this the correct specification for that application.
- PTFE Coating Extends Service Life in Production Environments: in high-volume operations where adhesive-coated or pre-laminated panels run continuously, the non-stick PTFE spiral coating prevents the buildup that dulls standard tools prematurely.
- Precision-Ground Spurs and Cutting Edges for Clean Entry and Exit: the V2 spurs and Z2 ground edges work together to score and clear material cleanly, protecting decorative surfaces on laminates and coated panels where tearout is not acceptable.
Specifications
- Manufacturer Part Number: 377.101.12
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 15mm
- Total Length: 70mm
- Shank: 10x38mm
- Rotation: LH (Left-Hand)
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Blade Material: HW (Tungsten Carbide)
- Tool Type: Dowel Drill with Countersink
Approved Applications
- Drilling and countersinking in a single pass on panel stock
- Bolt head and hardware connector recessing in cabinet and furniture panels
- Dowel hole boring in chipboard, MDF, HDF, and plywood
- Processing laminates, coated panels, hardwood, and softwood
- Left-hand spindle operations on multi-spindle CNC boring machines and boring centers
- Panel processing on boring machines fitted with an adapter or chuck
Frequently Asked Questions
What is the difference between a standard dowel drill and this dowel drill with countersink?
A standard dowel drill produces a cylindrical hole only. This tool adds an integrated countersink above the bore diameter, creating a recessed seat for bolt heads, cam connectors, or hardware fittings in a single operation - eliminating the need for a separate countersinking step and improving efficiency in panel processing.
Why is left-hand (LH) rotation important, and can this drill be used in a right-hand spindle?
The left-hand rotation is specifically designed for left-side spindle positions on multi-spindle boring heads and CNC boring centers. Using a left-hand drill in a right-hand spindle - or vice versa - reverses the cutting direction, causing the tool to rub rather than cut, which results in poor hole quality, excessive heat, and rapid tool wear. Always match the tool rotation to the spindle designation.
What does the PTFE coating on the spiral flutes do?
The PTFE (polytetrafluoroethylene) coating applied to the spiral portion of the tool acts as a non-stick barrier that prevents pitch, resin, and adhesive from bonding to the flutes during drilling. This is particularly valuable when processing pre-laminated, coated, or adhesive-treated panels, as buildup on uncoated flutes increases friction and heat, accelerating edge wear and reducing hole quality.
What does the length-adjusting screw on the shank do?
The parallel shank includes a length-adjusting screw that allows the operator to set and fine-tune the drilling depth directly at the machine without removing the tool from the spindle. This feature simplifies setup when switching between panel thicknesses or connector types that require different countersink depths, reducing changeover time on multi-spindle boring equipment.
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