Product Description
CMT Dowel Drill 7/32" x 35 x 70mm Right-Hand by CMT is a precision-engineered 2-flute carbide-tipped boring tool designed for clean, accurate blind hole drilling in wood panels, MDF, chipboard, laminates, and coated boards. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this right-hand rotation dowel drill is optimized for use in multi-spindle CNC boring machines, panel processing centers, and boring centers where consistent hole quality and long tool life are critical. The spiral flutes are coated with P.T.F.E. to reduce pitch and adhesive buildup, making this bit equally well-suited for furniture manufacturing, cabinet making, and high-volume dowel joinery applications.
Key Features
- Tungsten carbide (HW) cutting head - delivers long-lasting sharpness and dimensional accuracy when boring into hardwood, softwood, MDF, chipboard, and laminates, reducing replacement frequency in production environments.
- P.T.F.E.-coated spiral flutes - resists pitch and glue buildup during boring, keeping the flutes clear and maintaining consistent chip evacuation hole after hole.
- Precision-balanced centre point - ensures the drill locates exactly on center at the start of each bore, preventing wandering and producing holes that align reliably for dowel insertion.
- 2 precision-ground cutting edges - provide balanced cutting forces and a flat-bottomed blind hole, which is essential for tight-fitting dowel connections in panel furniture.
- 2 negatively ground spurs (V2) - score the material cleanly at the perimeter of the bore before the cutters engage, producing clean hole walls with no tearout or rough edges on the panel face.
- 2 spiral flutes - efficiently clear waste material from the bore during drilling, reducing heat buildup and improving hole finish in dense sheet materials.
- Parallel shank with driving flat and length adjusting screw - provides positive drive engagement in boring machine chucks and allows precise depth setting without slipping, ensuring repeatable blind-hole depth across a panel.
- 10 x 30mm shank - fits standard boring machine spindle chucks used in multi-spindle CNC and panel processing equipment, enabling straightforward installation without adapters.
- Right-hand (RH) rotation - matches the standard spindle direction of the vast majority of industrial boring machines, making this drill a direct drop-in for typical production setups.
Why This Product
- The negatively ground spurs combined with the precision carbide cutting edges produce clean entry and flat-bottom blind holes - exactly what dowel joinery requires for flush, gap-free panel assembly.
- At 70mm total length with a 35mm cutting height, this long-series drill reaches the full boring depth needed for panel-to-panel dowel connections without the limitation of a short-series bit, making it the right choice when standard-length drills fall short.
- The P.T.F.E. spiral coating directly addresses one of the most common production slowdowns - adhesive and resin buildup on boring tools - by keeping flutes clean longer and extending intervals between tool changes.
- The driving flat on the parallel shank and the integrated length adjusting screw give operators precise, repeatable depth control in production boring machines, reducing setup time and scrap from inconsistent hole depths.
Specifications
- Manufacturer Part Number: 311.055.11
- Brand: CMT Orange Tools
- Diameter: 7/32"
- Cutting Height: 35mm
- Total Length: 70mm
- Shank: 10x30mm
- Number of Flutes: 2
- Number of Spurs: 2
- Spur Grind: Negatively ground spurs
- Blade Material: HW (tungsten carbide)
- Rotation: Right-hand (RH)
- Shank Style: Parallel shank with driving flat and length adjusting screw
Approved Applications
- Blind hole drilling for dowel connections in panel furniture and cabinet assembly
- Panel drilling in furniture manufacturing and cabinet making
- Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Multi-spindle CNC boring machine operations
- CNC boring center and panel processing center applications
Frequently Asked Questions
What is the difference between the cutting height and the total length of this dowel drill?
The cutting height is 35mm, which is the length of the fluted boring section that actually removes material during drilling. The total length is 70mm, which includes both the cutting section and the 10x30mm parallel shank. When setting boring depth on your machine, reference the cutting height - not the total length.
What does "negatively ground spurs" mean, and why does it matter?
Negatively ground spurs are the two outer scoring points on this drill that cut the perimeter of the bore before the main cutting edges remove the core material. The negative grind geometry is specifically designed for panel materials like chipboard, MDF, and laminates, where a positively ground spur can cause chipping or tearout on the panel face. The result is a clean, defined hole wall suitable for tight-fitting dowel joints.
What does the P.T.F.E. coating on the spiral flutes do?
The P.T.F.E. coating on the spiral portion of this drill reduces friction between the flutes and the material being bored. This minimizes the adhesion of pitch, resin, and glue residue that would otherwise accumulate and clog the flutes. Keeping the flutes clear helps maintain consistent chip evacuation and extends the effective working life of the tool between sharpenings or replacements.
Is this drill compatible with a standard boring machine chuck or does it require a special adapter?
This drill uses a parallel shank with a driving flat, sized at 10x30mm, which is a standard fit for the spindle chucks found on most multi-spindle CNC boring machines, boring centers, and panel processing centers. The integrated driving flat provides positive rotational engagement, and the length adjusting screw allows precise depth setting directly in the chuck without additional adapters in typical production setups.
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