Product Description
CMT Dowel Drill Xtreme by CMT is a heavy-duty left-hand rotating boring tool engineered for high-production panel processing. Built from solid micro-grain carbide (HWM), this 10mm diameter dowel drill delivers clean, flat-bottom blind holes in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels. With a 35mm cutting height and 70mm total length, it is classified as a long-series dowel drill - purpose-built for deeper boring applications on multi-spindle CNC boring machines and panel processing centers. The Xtreme sharpening standard and precision-ground geometry make this drill a reliable choice for demanding cabinetry and furniture production environments.
Key Features
- HWM solid micro-grain carbide construction - delivers exceptional hardness and wear resistance, meaning fewer tool changes and more consistent bore quality across long production runs.
- Xtreme sharpening grade - the highest sharpening standard applied to this series, producing ultra-clean cutting edges that reduce tearout and extend tool life significantly compared to standard-grade tooling.
- 10mm diameter with 35mm cutting height - optimized proportions for deep blind-hole boring in panels, giving the cutting edge full engagement depth without sacrificing rigidity.
- 70mm total length (long series) - the extended body length allows use in deeper spindle configurations and accommodates thicker panel stacks or longer boring adapter setups.
- Left-hand (LH) rotation - designed specifically for left-hand spindle positions on multi-spindle boring heads, ensuring the correct cutting direction for clean chip evacuation and accurate hole geometry.
- 10x25mm parallel shank with driving flat - provides a secure, positive grip in standard boring machine chucks and adapters, preventing slippage under high-cycle production loads.
- 2 flutes and 2 spurs - the dual-flute, dual-spur configuration scores the perimeter of the hole before the body cuts, resulting in chip-free bore walls and sharp, clean entry points on veneered and laminated surfaces.
- Precision-balanced center point - ensures accurate, repeatable bore positioning at high production speeds, reducing setup waste and maintaining tight hole-to-hole tolerance across large panel batches.
Why This Product
- Purpose-built for left-hand spindle boring heads - if your multi-spindle CNC boring machine or panel processing center requires LH tooling at specific spindle positions, this drill provides the correct rotation geometry without compromise or workaround.
- Long-series length solves deep-boring challenges - the 70mm total length and 35mm cutting height address applications where standard short-series drills cannot reach full depth, making it the right fit for thicker panel stock or extended adapter configurations.
- Xtreme-grade carbide means fewer resharpenings and less downtime - the HWM micro-grain carbide body combined with the Xtreme sharpening standard tolerates abrasive materials like MDF and chipboard far longer than lower-grade tooling, keeping production lines running.
- Clean holes on sensitive surfaces without secondary finishing - the 2-spur geometry scores cleanly through laminates and coated panels before the flutes remove material, eliminating chip-out that would otherwise require rework or panel rejection.
Specifications
- Manufacturer Part Number: 311.100.22
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10x25mm
- Rotation: LH (Left-Hand)
- Number of Flutes: 2
- Number of Spurs: 2
- Material: HWM (Solid Micro-Grain Carbide)
- Sharpening Grade: Xtreme
Approved Applications
- Chipboard and particle board boring
- MDF and HDF panel drilling
- Hardwood and softwood dowel hole boring
- Plywood boring
- Laminated and coated panel drilling
- Multi-spindle CNC boring machine operations
- CNC boring center production runs
- Panel processing center applications
- Boring machine setups using an adapter or chuck
Frequently Asked Questions
What does "LH" rotation mean, and how do I know if I need a left-hand drill?
LH stands for Left-Hand rotation, meaning the drill cuts when rotating counter-clockwise when viewed from above the shank. Multi-spindle boring heads use both right-hand and left-hand spindles in fixed positions to achieve symmetric hole patterns. Check your machine's spindle layout to confirm which positions require LH tooling - using the wrong rotation direction will prevent the drill from cutting and can damage the workpiece or tooling.
What is HWM carbide, and why does it matter for panel boring?
HWM refers to the solid micro-grain carbide compound used to manufacture this drill. Micro-grain carbide has a very fine internal grain structure, which gives the cutting edges higher hardness and better resistance to the abrasive fillers found in engineered panels like MDF and chipboard. This translates directly to a longer service life and more consistent bore quality before resharpening is needed.
What is the difference between the Xtreme sharpening grade and a standard sharpening?
The Xtreme sharpening grade designates a higher precision level applied to the cutting edges and spurs during manufacturing. This results in sharper initial geometry, finer cutting-edge finish, and improved performance on demanding materials. For production environments processing abrasive panels at high cycle rates, the Xtreme grade provides a measurable advantage in bore quality and tool longevity compared to non-Xtreme variants.
Can this drill be used for through-hole drilling as well as blind-hole boring?
This dowel drill is designed primarily for blind-hole boring, where the hole does not pass completely through the panel. The 35mm cutting height and flat-bottom geometry are optimized for that application. While the drill can physically enter a through-hole path, the geometry - particularly the flat-bottom center point and spur configuration - is intended for stopping at a defined depth rather than breaking through a face.
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