Product Description
CMT Dowel Drill with Countersink - 10x12x70mm, 10x41mm Shank, Left-Hand Rotation by CMT is a precision boring tool engineered for woodworking operations that require drilling and countersinking in a single pass. Designed for use with multi-spindle CNC boring machines, boring centers, and panel processing equipment, this left-hand (LH) rotation dowel drill combines a hardened tungsten carbide (HW) cutting head with a super-strength steel body, making it well-suited for high-volume panel processing in chipboard, MDF, plywood, hardwood, softwood, laminates, and coated panels. The spiral portion carries a P.T.F.E. non-stick coating that helps prevent pitch and resin buildup during repeated boring cycles, keeping the tool performing cleanly across extended production runs.
Key Features
- HW (Tungsten Carbide) Cutting Head - delivers long-lasting edge retention in abrasive engineered panels and hardwoods, reducing the frequency of tool changes during production runs.
- Precision-Balanced Centre Point - ensures accurate hole positioning on entry, which translates to tighter tolerances and cleaner bores in CNC and multi-spindle applications.
- 2 Precision-Ground Cutting Edges (Z2) - balanced dual-flute geometry produces smooth, consistent bore walls in a wide range of panel materials with minimal tearout.
- 2 Ground Spurs (V2) - score the material perimeter cleanly before the main cutting edges engage, resulting in sharp, chip-free hole rims even in laminated or coated panel stock.
- 2 Spiral Flutes - efficiently evacuate chips from the bore during drilling, reducing heat buildup and helping maintain cut quality across continuous operation.
- P.T.F.E.-Coated Spiral Portion - the non-stick coating resists pitch, glue, and resin adhesion, extending tool life and reducing cleaning downtime between jobs.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10x41mm shank provides secure, repeatable seating in compatible boring machine chucks and adapters, and the adjusting screw allows precise depth setting without additional tooling.
- Integrated Countersink - drills and countersinks in one pass, eliminating a secondary machining step and increasing throughput when recessing bolt heads or connectors in thicker panel stock.
- Left-Hand (LH) Rotation - engineered for left-hand spindle positions on multi-spindle boring machines, ensuring correct cutting geometry and clean results on LH-designated drill banks.
Why This Product
- Combines dowel boring and countersinking into a single tool pass - eliminating secondary machining steps saves cycle time and reduces handling in high-output panel processing environments.
- The HW carbide head paired with a P.T.F.E.-coated steel body gives this drill durability in abrasive materials like chipboard, MDF, and laminates, where uncoated steel tools tend to dull quickly and accumulate resin buildup.
- With 2 ground spurs and a precision-balanced centre point, this drill delivers the clean entry and chip-free rims that coated and laminated panels demand - reducing the risk of surface defects that require rework.
- The left-hand rotation design, 10x41mm parallel shank with driving flat, and length adjusting screw make this drill a direct-fit solution for LH spindle positions on multi-spindle CNC boring machines and boring centers, without requiring adapters or modification.
Specifications
- Manufacturer Part Number: 377.100.12
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 12mm
- Total Length: 70mm
- Shank: 10x41mm
- Rotation: Left-Hand (LH)
- Number of Spurs: 2
- Number of Cutting Edges: 2
- Blade Material: HW (Tungsten Carbide)
Approved Applications
- Drilling and countersinking in one pass
- Bolt head and connector recessing in panel stock
- Dowel hole boring in furniture and cabinet components
- Panel processing on multi-spindle CNC boring machines
- Panel processing on CNC boring centers and panel processing centers
- Use in boring machines with adapter or chuck
Frequently Asked Questions
What does the left-hand (LH) rotation designation mean, and why does it matter?
Left-hand rotation means this drill is designed to spin counter-clockwise when viewed from the shank end. Multi-spindle CNC boring machines and boring centers assign specific spindle positions as left-hand or right-hand. Installing an LH drill on the correct LH spindle position ensures the cutting edges and spurs engage the material properly, producing clean bores and chip-free rims. Using an LH drill on a right-hand spindle would cause the tool to rub rather than cut, damaging both the tool and the workpiece.
What materials is this dowel drill with countersink compatible with?
The HW (tungsten carbide) cutting head and P.T.F.E.-coated steel body make this drill suitable for chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels. The ground spurs score the surface perimeter before the main cutting edges engage, which is particularly important for clean results in laminated and coated panel materials where surface tearout is a concern.
What is the purpose of the integrated countersink on this dowel drill?
The countersink geometry creates a clean recess around the top of the bore in a single machining pass. This is used when bolt heads, connector hardware, or fasteners need to sit flush with or below the panel surface - a common requirement in furniture manufacturing and cabinet assembly using thicker panel stock. Combining drilling and countersinking in one pass reduces cycle time compared to performing these as two separate operations.
What does the P.T.F.E. coating on the spiral portion do?
The P.T.F.E. (polytetrafluoroethylene) coating applied to the spiral flutes acts as a non-stick barrier that resists adhesion of pitch, glue, and resin during boring operations. In panel materials such as chipboard and MDF where adhesives and binders are present, residue can accumulate on uncoated tool surfaces, increasing friction, generating heat, and degrading cut quality. The P.T.F.E. coating helps keep the flutes clear, extending tool life and maintaining consistent boring performance across longer production runs.
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.