Product Description
CMT Dowel Drill with Countersink - 10x12x70mm, S=10x41mm, Right-Hand Rotation is a precision boring tool engineered for clean, accurate dowel hole drilling and countersinking in a single pass. Built by CMT on a super-strength steel body with a tungsten carbide (HW) cutting head, this right-hand drill combines two precision-ground cutting edges, two negatively ground spurs, and two spiral flutes to produce flat-bottom bores with crisp, tear-free walls. A PTFE-coated spiral prevents pitch and adhesive buildup, keeping the tool running cleanly through high-production runs on panel processing equipment and multi-spindle CNC boring machines.
Key Features
- HW (Tungsten Carbide) Cutting Head - hard carbide material maintains a sharp cutting edge longer than standard steel, reducing downtime for tool changes in production environments.
- 2 Precision-Ground Cutting Edges (Z2) - balanced cutting geometry produces consistent bore diameter and a clean, flat bottom on every hole, minimizing rejects and rework.
- 2 Negatively Ground Spurs (V2) - negatively sharpened spurs score the perimeter of the hole before the main cutters clear material, resulting in clean entry and exit walls with no tearout on coated panels, laminates, or hardwood faces.
- Precision-Balanced Centre Point - the ground centre point registers accurately at the marked bore location, preventing the bit from wandering and ensuring repeatable hole placement across multi-spindle setups.
- PTFE-Coated Spiral Flutes - the non-stick orange or black PTFE coating on the spiral portion prevents glue and pitch accumulation, extending tool life and maintaining chip evacuation efficiency during continuous panel processing.
- Integrated Countersink Function - drills and countersinks in a single operation, creating a clean recess for bolt heads or panel connectors without a secondary tool or setup change.
- 10x41mm Parallel Shank with Driving Flat and Length-Adjusting Screw - the driving flat provides positive drive engagement and prevents slippage, while the length-adjusting screw allows precise depth setting on boring machines and CNC boring centers.
- Right-Hand (RH) Rotation - matches the standard spindle direction of multi-spindle CNC boring machines and boring centers, making this a direct-fit replacement or addition to existing tooling sets.
Why This Product
- Combines drilling and countersinking into one pass - eliminating a secondary operation saves cycle time and reduces fixture changeovers on panel processing lines handling chipboard, MDF, or coated panels.
- Negatively ground spurs and a carbide cutting head work together to produce clean bores in demanding materials such as laminates, hardwood, and HDF, where tearout at the hole perimeter is a common quality issue.
- The PTFE spiral coating keeps chips and adhesives from packing into the flutes, which is especially valuable in high-volume runs where glue-coated or resin-saturated panels are processed continuously.
- A 10mm shank at 41mm gripping length, paired with a driving flat and adjusting screw, provides secure, slip-free engagement on CNC boring centers and multi-spindle machines - reducing the risk of positional drift during repetitive production cycles.
Specifications
- Manufacturer Part Number: 377.100.11
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 12mm
- Total Length: 70mm
- Shank: 10x41mm
- Rotation: Right-Hand (RH)
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Body Material: Super-strength steel
- Spiral Coating: PTFE (orange or black)
- Tool Type: Dowel Drill with Countersink
Approved Applications
- Dowel hole drilling and countersinking in a single pass
- Bolt head and panel connector recessing
- Panel processing on multi-spindle CNC boring machines
- CNC boring center operations
- Panel processing center production runs
- Boring machine applications using an adapter or chuck
- Drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
Frequently Asked Questions
What is the difference between this dowel drill and a standard dowel drill without a countersink?
This tool incorporates a countersink geometry in addition to the standard dowel boring profile. That means it drills the dowel hole and simultaneously creates a recessed shoulder for a bolt head or panel connector in the same plunge - eliminating the need for a separate countersink operation or tool change. Standard dowel drills without a countersink produce a flat-bottom bore only, with no recess at the panel surface.
What machines are compatible with this drill's 10x41mm shank?
The 10mm parallel shank with a driving flat and length-adjusting screw is designed for use in multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines equipped with an adapter or chuck that accepts a 10mm parallel shank.
Why are negatively ground spurs important when drilling laminates or coated panels?
Negatively ground spurs score the perimeter of the bore before the main cutting edges remove material. This scoring action severs the surface fibers or coating cleanly around the hole boundary, preventing the cutter from lifting or tearing the laminate or coating as it enters and exits. The result is a clean, defined hole edge without chipping or delamination - which is critical for visible faces on finished panel products.
What does the PTFE coating on the spiral portion do, and does it affect cutting performance?
The PTFE (polytetrafluoroethylene) coating applied to the spiral flute area gives the surface a non-stick property. During drilling, resins, glues, and wood pitch tend to adhere to uncoated flutes and gradually pack the chip channels, reducing cutting efficiency and increasing friction. The PTFE coating prevents this buildup, keeping the flutes clear so chips evacuate freely - maintaining consistent cutting performance over extended production runs without requiring frequent cleaning stops.
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