Product Description
CMT 313.100.12 Dowel Drill for Through Holes - 10 x 27 x 57.5mm Left-Hand is a precision-engineered, carbide-tipped boring tool built for through-hole dowel drilling in wood-based panels and solid wood. Produced by CMT, this 10mm two-flute drill is designed to deliver clean, accurate bores that exit the workpiece without blowout - making it a reliable choice for furniture manufacturing, panel processing, and dowel joinery applications. The left-hand rotation configuration suits multi-spindle boring machines and CNC boring centers where LH spindle positions are required.
Key Features
- 2-flute HW (tungsten carbide) cutting head - precision-ground carbide edges stay sharp longer and resist wear when drilling chipboard, MDF, hardwood, and coated panels, reducing downtime and tool replacement frequency.
- Through-hole geometry with precision balanced centre point - the tool is engineered specifically for through-hole boring, guiding the drill accurately into the workpiece and reducing deflection for consistently straight, on-location holes.
- 2 precision-ground cutting edges (Z2) - dual cutting edges balance the load evenly during boring, producing smooth bore walls and accurate 10mm hole diameters with each pass.
- 2 spiral flutes with PTFE coating (orange or black) - the polytetrafluoroethylene coating on the spiral portion repels pitch, glue, and resin buildup, keeping the flutes clear and extending tool life between cleanings.
- Super-strength steel body - the steel shank and body resist flex and vibration under load, contributing to hole accuracy and consistent performance across production runs.
- Parallel shank with driving flat and length adjusting screw - the 10 x 26mm parallel shank with a driving flat seats securely in boring machine chucks and adapters, while the length adjusting screw allows precise depth positioning.
- Left-hand (LH) rotation - matches LH spindle positions on multi-spindle boring machines and CNC boring centers, ensuring correct cutting direction without modification.
Why This Product
- The through-hole cutting geometry is purpose-built to prevent blowout on the exit face - a critical requirement when drilling through panels for dowel connections in furniture assembly, where surface quality on both faces matters.
- The HW (tungsten carbide) cutting head paired with a PTFE-coated spiral is a proven combination for high-volume panel processing: carbide holds an edge through abrasive materials like MDF and chipboard, while PTFE keeps resin and glue from accumulating in the flutes.
- The 10mm diameter and 27mm cutting height match standard dowel hole requirements used in cabinet and furniture production, making this drill a direct-fit replacement or upgrade for existing boring machine setups.
- Left-hand rotation is specifically designed for LH spindle positions - selecting the correct rotation direction eliminates vibration, poor surface finish, and premature tool wear that result from running a wrong-hand drill.
Specifications
- Manufacturer Part Number: 313.100.12
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 27mm
- Total Length: 57.5mm
- Shank: 10 x 26mm parallel shank with driving flat
- Number of Flutes: 2
- Rotation: Left-hand (LH)
- Blade Material: HW (tungsten carbide)
- Sharpening: Through holes 60
- Application Type: Through hole
Approved Applications
- Through-hole drilling for dowel connections in panel and solid wood assembly
- Furniture manufacturing and cabinet production
- Panel processing in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Multi-spindle CNC boring machines and CNC boring centers
- Panel processing centers with LH spindle positions
- Boring machines fitted with a compatible adapter or chuck
Frequently Asked Questions
What is the difference between a through-hole dowel drill and a blind-hole dowel drill?
A through-hole dowel drill, like this CMT 313.100.12, is designed to bore a hole that exits completely through the workpiece. The cutting geometry is optimized to minimize tearout at the exit face. A blind-hole drill is designed to stop at a set depth without breaking through, typically producing a flat-bottom hole. Using a through-hole drill for the correct application ensures clean results on both entry and exit surfaces.
Why does this drill have left-hand (LH) rotation, and how do I know if my machine needs it?
Left-hand rotation means the drill cuts when spinning counterclockwise (viewed from the shank end). Multi-spindle boring machines and CNC boring centers often have both right-hand and left-hand spindle positions. The spindle position on your machine determines which rotation direction is required. Using an LH drill on an LH spindle ensures correct cutting action - using the wrong rotation causes rubbing rather than cutting, producing poor hole quality and rapid tool wear.
What materials can this 10mm through-hole dowel drill be used on?
The HW (tungsten carbide) cutting head and through-hole geometry make this drill suitable for chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels - materials commonly processed in furniture and cabinet manufacturing. The PTFE-coated spiral helps prevent pitch and glue buildup when drilling adhesive-treated or resin-rich materials.
What does the length adjusting screw on the shank do?
The parallel shank includes a driving flat and a length adjusting screw that allows the tool to be precisely positioned within the boring machine chuck or adapter. This means you can set the exact projection length needed to achieve the correct drilling depth for your workpiece, providing repeatable, accurate results across production runs without needing to reset each time.
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