Product Description
CMT 309.070.11 Dowel Drill 7 x 43 x 70mm RH by CMT is a precision-engineered 7mm diameter boring tool built for clean, accurate dowel hole production in furniture manufacturing, cabinet making, and panel processing applications. Featuring a tungsten carbide (HW) cutting head, 4 spiral flutes, and a negatively ground spur configuration, this right-hand rotation drill produces flat-bottom blind holes with smooth walls and virtually no tearout - even in demanding materials like MDF, chipboard, hardwood, and laminated panels. The 70mm overall length and 43mm cutting height make it well suited for panels requiring deeper blind hole penetration, while the parallel shank with driving flat and length adjusting screw ensures secure, consistent seating in multi-spindle boring machines and CNC boring centers.
Key Features
- Tungsten carbide (HW) cutting head with precision balanced centre point - delivers accurate hole positioning and consistent bore depth, reducing setup adjustments and scrap on production runs.
- 2 precision-ground carbide cutting edges (Z2) - provides clean, efficient material removal on each pass, extending edge life compared to standard steel alternatives in abrasive materials like MDF and chipboard.
- 2 negatively ground spurs (V2) - scores the material perimeter cleanly before the main cutters engage, eliminating tearout and splintering at the hole entrance for professional-quality dowel connections.
- 4 spiral flutes - rapidly evacuates chips and dust from the bore, reducing heat buildup and preventing clogging during high-cycle production boring.
- PTFE-coated cutter portion (black or orange) - non-stick coating prevents pitch and adhesive buildup on the flutes, maintaining cutting efficiency and simplifying cleaning between operations.
- Super-strength steel body - provides a rigid, vibration-resistant platform for the carbide head, supporting accurate boring across extended production use.
- Parallel shank 10 x 20mm with driving flat and length adjusting screw - allows precise depth setting and secure tool retention in spindle boring machines and CNC boring centers, minimizing runout.
- Right-hand (RH) rotation - compatible with the standard spindle direction of the vast majority of industrial multi-spindle boring machines and CNC panel processing centers.
- 70mm overall length, 43mm cutting height - the longer series design accommodates thicker panel stock and deeper blind holes that shorter-series drills cannot reach.
Why This Product
- The combination of negatively ground spurs and a precision balanced carbide centre point means clean entry and a flat hole bottom - critical for tight-tolerance dowel joints in furniture and cabinet panel assembly where gap-free connections matter.
- The PTFE coating on the spiral flutes actively resists pitch and glue accumulation, keeping the tool performing consistently across long production runs without frequent manual cleaning interruptions.
- At 70mm in overall length with 43mm of usable cutting height, this drill handles thicker panel stock that standard short-series dowel drills cannot accommodate, giving fabricators greater flexibility across different panel thicknesses.
- The 10 x 20mm parallel shank with driving flat and integrated length adjusting screw is designed for direct, secure mounting in industrial spindle boring machines - eliminating adapter complexity and supporting repeatable depth accuracy across high-volume runs.
Specifications
- Manufacturer Part Number: 309.070.11
- Brand: CMT Orange Tools
- Product Type: Dowel Drill
- Diameter: 7mm
- Cutting Height: 43mm
- Total Length: 70mm
- Shank: 10 x 20mm
- Number of Cutting Edges: 2
- Number of Spurs: 2
- Number of Flutes: 4
- Sharpening: Negatively ground spurs
- Material: HW (Tungsten Carbide)
- Rotation: Right-hand (RH)
- Shank Style: Parallel shank with driving flat and length adjusting screw
Approved Applications
- Drilling blind holes for dowel connections in furniture and cabinet panel assemblies
- Panel drilling on chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Furniture manufacturing and cabinet making production lines
- Multi-spindle CNC boring machines and CNC boring centers
- Panel processing centers and boring machines with compatible spindle chucks
Frequently Asked Questions
What shank size does this dowel drill use, and will it fit my boring machine?
This drill uses a 10 x 20mm parallel shank with a driving flat and a length adjusting screw. This shank configuration is standard on industrial multi-spindle boring machines and CNC boring centers designed for panel processing. Verify that your machine's spindle collet or chuck accepts a 10mm parallel shank before mounting.
What is the difference between negatively ground spurs and standard spurs on a dowel drill?
Negatively ground spurs are angled to score the material perimeter cleanly before the main carbide cutting edges remove material from the centre of the hole. This geometry produces a clean, chip-free entrance edge, which is particularly important when boring laminates, coated panels, and veneered chipboard where surface tearout would compromise joint quality.
What does the PTFE coating on the cutter portion do during boring operations?
The PTFE (polytetrafluoroethylene) coating applied to the cutter portion - available in black or orange - creates a non-stick surface on the spiral flutes. This reduces the adhesion of pitch, resin, and woodworking adhesives to the flute surface, helping maintain chip evacuation efficiency during high-cycle production boring and making the tool easier to clean between operations.
Why choose a 70mm long-series dowel drill over a shorter-series version?
The 70mm overall length provides a 43mm cutting height, which is necessary when boring blind holes in thicker panel stock that cannot be accommodated by shorter-series dowel drills. If your panel thickness or the required hole depth exceeds what a standard-length drill can reach, the long-series design of this drill is the correct choice for maintaining full cutting engagement without bottoming out the shank.
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.