Product Description
CMT Four Flute Dowel Drill 12 x 50 x 85mm RH by CMT is a precision-engineered boring tool designed for clean, accurate blind hole drilling in solid wood, chipboard, MDF, laminates, and coated panels. Built on a super-strength steel body with a tungsten carbide (HW) head, this long-series dowel drill delivers the cutting depth and chip clearance that furniture manufacturers, cabinet makers, and panel processors demand from a high-cycle boring tool. The four spiral flutes aggressively evacuate chips from deep blind holes, while the PTFE coating on the cutter portion resists pitch and glue buildup - keeping the tool running cleanly through production runs.
Key Features
- HW (Tungsten Carbide) Head with Precision Balanced Centre Point - the carbide tip stays sharp through high-volume panel drilling and maintains accurate hole positioning, reducing setup time and scrap from off-center bores.
- 2 HW Precision Ground Cutting Edges (Z2) - dual carbide cutting edges produce smooth, flat-bottomed holes that seat dowels flush without secondary cleanup or sanding.
- 2 Negatively Ground Spurs (V2) - the negatively set spurs score the bore perimeter cleanly before the cutting edges engage, eliminating tearout and fiber fraying on laminates, coated panels, and hardwood faces.
- 4 Spiral Flutes - four flutes double the chip evacuation capacity compared to two-flute designs, reducing clogging in deep blind holes and enabling faster feed rates through MDF and chipboard.
- PTFE Coating on Cutter Portion - the non-stick PTFE coating resists adhesive and resin buildup from coated and laminated panels, extending service intervals and maintaining consistent bore quality over time.
- Super-Strength Steel Body - the robust steel shank and body resist deflection during high-cycle CNC boring operations, preserving hole location accuracy across large production batches.
- 10 x 27mm Parallel Shank with Driving Flat and Length Adjusting - the standardized shank with driving flat seats securely in multi-spindle boring machine chucks and allows quick depth adjustment, compatible with a wide range of CNC boring centers and panel processing equipment.
- Right-Hand (RH) Rotation - matches the standard spindle direction of the vast majority of CNC boring machines, making this a direct drop-in tool without spindle reconfiguration.
- Long Series 85mm Overall Length - the extended body reaches deep into panel assemblies and accommodates adapter spacing on multi-spindle heads where shorter tools cannot reach effectively.
Why This Product
- The combination of negatively ground spurs and precision carbide cutting edges makes this dowel drill particularly well-suited for laminated and coated panels where surface tearout is unacceptable - the spurs pre-score the material so the cutting edges remove material cleanly.
- Four spiral flutes set this tool apart from standard two-flute boring bits for deep blind hole applications - faster chip evacuation means less heat buildup and fewer interrupted cuts when boring through dense MDF or chipboard.
- The PTFE-coated cutter portion directly addresses one of the most common production slowdowns in furniture and cabinet manufacturing - pitch and glue deposits on boring tools - by resisting adhesive buildup and maintaining free-cutting action longer.
- At 85mm total length with a 50mm cutting height and a 10 x 27mm parallel shank with driving flat, this drill is dimensioned for multi-spindle CNC boring machines and panel processing centers used in standard flat-panel furniture production workflows.
Specifications
- Manufacturer Part Number: 373.120.11
- Brand: CMT Orange Tools
- Diameter: 12mm
- Cutting Height: 50mm
- Total Length: 85mm
- Shank: 10 x 27mm
- Number of Flutes: 4
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Spur Sharpening: Negatively ground spurs
- Blade Material: HW (Tungsten Carbide)
- Rotation: Right-hand (RH)
- Cutter Coating: PTFE (black or orange)
Approved Applications
- Drilling blind holes for dowel joinery connections in furniture and cabinet carcasses
- Panel drilling on flat-panel furniture components
- Furniture manufacturing production boring operations
- Cabinet making and face-frame assembly boring
- Boring in solid hardwood and softwood
- Boring in chipboard, MDF, and HDF panels
- Boring in plywood, laminates, and coated panels
Frequently Asked Questions
What machines is the 10 x 27mm parallel shank with driving flat compatible with?
The 10 x 27mm parallel shank with driving flat is the standard shank format used on multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines fitted with a compatible adapter or chuck. The driving flat ensures the tool seats without spinning in the chuck under load.
Why does this dowel drill have four flutes instead of the more common two flutes?
The four spiral flutes provide significantly faster chip evacuation from the bore compared to a two-flute design. This is especially important when drilling deep blind holes - as specified with this tool's 50mm cutting height - because chips that remain in the bore can cause heat buildup, surface damage, and tool breakage. The additional flutes keep the hole clear and the cut free-running.
What is the purpose of the negatively ground spurs on this dowel drill?
The 2 negatively ground spurs (V2) score the perimeter of the bore before the main carbide cutting edges remove material. This pre-scoring action severs surface fibers cleanly and prevents tearout on laminates, coated panels, and hardwood veneers - producing smooth bore walls and a clean entry point without fraying or chipping.
What does the PTFE coating on the cutter portion do?
The PTFE coating applied to the cutter portion creates a non-stick surface that resists the buildup of pitch, resin, and adhesive deposits that commonly accumulate when boring chipboard, MDF, and laminated panels. By preventing this buildup, the coating helps maintain consistent cutting performance and extends the time between cleanings or resharpenings during production use.
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