Product Description
CMT Two Flute Dowel Drill 7 x 44 x 77mm RH by CMT is a precision-engineered boring tool designed for clean, flat-bottomed blind holes in furniture panels, cabinet components, and solid wood assemblies. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this right-hand rotating drill delivers the accuracy and repeatability demanded by professional woodworkers, furniture manufacturers, and panel processing operations. The 7mm cutting diameter and 44mm cutting height make it well suited for deep blind hole drilling in thick panels where consistent dowel joint alignment is critical.
Key Features
- HW (Tungsten Carbide) Cutting Head - hard carbide construction maintains a sharp edge through repeated use in chipboard, MDF, hardwood, and laminated panels, reducing the need for frequent tool changes.
- 2 Precision Ground Cutting Edges (Z2) - dual flute geometry produces balanced cutting forces for smooth entry, reduced vibration, and consistent hole diameter across every bore.
- 2 Negatively Ground Spurs (V2) - negatively set spurs score the material perimeter before the main cutters engage, delivering clean bore walls and virtually tearout-free hole exits on coated and laminated surfaces.
- PTFE Coating on the Cutter Portion - the orange or black P.T.F.E. non-stick coating prevents pitch and adhesive buildup on the spiral, extending tool life and maintaining cutting efficiency between cleanings.
- Precision Balanced Centre Point - the HW centre point self-locates accurately in the bore, eliminating walking at startup and ensuring dowel holes are precisely positioned for tight, square joints.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10 x 30mm shank locks securely in boring machine chucks or multi-spindle heads with no slippage, while the adjusting screw allows fine-tuned depth setting for repeatable blind hole depth control.
- Super-Strength Steel Body - the steel shank and body resist flex and deflection under load, supporting accurate hole geometry even at higher feed rates in production environments.
Why This Product
- The 44mm cutting height in a 77mm overall length body makes this drill a strong choice for deep blind hole boring in thick cabinet panels and solid wood components where shorter drills cannot reach sufficient depth for a secure dowel joint.
- Negatively ground spurs combined with a carbide cutting head allow this drill to move cleanly through laminated panels, MDF, and coated chipboard without lifting the surface veneer - a common problem with lower-quality boring tools in high-output furniture production.
- The P.T.F.E. coated cutter surface reduces friction and adhesive buildup during repetitive panel drilling cycles, helping maintain consistent hole quality throughout a production run without stopping to clean the tool.
- The 10 x 30mm parallel shank with driving flat and length adjusting screw fits directly into standard multi-spindle CNC boring machines and boring centers, making this drill a direct-fit replacement or addition without adapter modifications.
Specifications
- Manufacturer Part Number: 362.070.11
- Brand: CMT Orange Tools
- Diameter: 7mm
- Cutting Height: 44mm
- Total Length: 77mm
- Shank: 10 x 30mm
- Number of Flutes: 2
- Number of Spurs: 2
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Rotation: Right-hand (RH)
- Shank Type: Parallel shank with driving flat and length adjusting screw
- Cutter Coating: Orange or black P.T.F.E.
Approved Applications
- Blind hole drilling for dowel connections in furniture and cabinet assembly
- Panel drilling in chipboard, MDF, and HDF
- Boring in hardwood and softwood solid panels
- Drilling in plastics and laminates
- Boring in coated panels and veneered surfaces
- Multi-spindle CNC boring machine operations
- CNC boring center and panel processing center applications
Frequently Asked Questions
What is the purpose of the negatively ground spurs on this dowel drill?
The 2 negatively ground spurs score the material at the outer edge of the bore before the main cutting edges remove the core material. This sequence produces clean, sharp hole perimeters with minimal tearout or surface lifting - particularly important when drilling through laminated panels, coated chipboard, or veneered surfaces where a ragged edge would be visible in the finished joint.
What shank size does this drill use, and will it fit my boring machine?
This drill uses a 10 x 30mm parallel shank with a driving flat and length adjusting screw. This is a standard shank configuration for multi-spindle CNC boring machines, boring centers, and panel processing centers. The driving flat prevents rotation in the chuck, and the length adjusting screw allows precise depth setting for consistent blind hole depth in production runs.
What does the P.T.F.E. coating on the cutter portion do?
The P.T.F.E. (polytetrafluoroethylene) non-stick coating applied to the cutter portion of the drill reduces friction between the tool and the workpiece material, and prevents pitch, resin, and adhesive deposits from bonding to the spiral flutes. This helps the drill clear chips more efficiently, maintains cutting performance over extended production cycles, and reduces downtime spent cleaning the tool.
Is this drill suitable for drilling MDF and chipboard in addition to solid wood?
Yes. The HW (tungsten carbide) cutting head is specifically selected for its ability to withstand the abrasive nature of composite panel materials such as MDF, chipboard, and HDF, which wear standard high-speed steel tools quickly. The same drill is equally effective in hardwood, softwood, plywood, laminates, plastics, and coated panels, making it a versatile single tool for mixed-material panel processing environments.
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