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3Z Three Blade Woodworking Composite Knife
3Z composite knives, SHK 6–20 mm, CED 6–20 mm, CEL 22–72 mm. Carbide bits for composite and laminated panel machining.
The VPOINT 3Z Three Blade Woodworking Composite Knife is a replaceable-knife cutting tool. Ideal for composite and laminated panel cutting, nested-based manufacturing and panel furniture machining.
Design and Construction
The three-blade woodworking composite knife carries three flutes on a tungsten carbide body for composite and laminated panel machining. Shank diameters (SHK) run 6–20 mm, cutting-edge diameters (CED) 6–20 mm, cutting edge lengths (CEL) 22–72 mm and overall lengths (OVL) 50–130 mm, as listed in the specifications table.
How It Works
The three-flute geometry shears laminated and composite panels without lifting the face layer, and the matched flute count balances chip load for panel work. Edge diameters equal to shank diameters in most part numbers give maximum rigidity at the cutting point.
Applications
- Composite and laminated panel cutting
- Nested-based manufacturing
- Panel furniture machining
- Sizing and shaping on CNC routers
Suitable Materials
- Laminated and composite panels
- MDF and melamine-faced boards
- Particleboard
- Plywood
The matched flute geometry keeps the face layer intact and the cut width constant in composite panels.
Material Comparison: Tungsten Carbide vs. PCD
The figures below are typical industry data for CNC tooling. Tungsten carbide is the economic standard for general CNC routing — tough, regrindable and available in every geometry. PCD wins on very high-volume abrasive work; this page covers the carbide line, and the comparison shows where each material wins so you can match the tool to the job.
| Property | Tungsten Carbide (This Tool) | PCD Diamond |
|---|---|---|
| Hardness | 1,500–2,000 HV | 7,000–9,000 HV |
| Tool life on MDF / particleboard / melamine | 30–60 h (baseline) | 15–20× longer (500–1,200 h) |
| Tool life on solid hardwood | 80–150 h (baseline) | 10–13× longer (800–2,000 h) |
| Edge renewal | 4–6 regrinds at shorter intervals | 5–8 regrinds, each removing only 0.2–0.3 mm of diamond |
| Surface finish | Ra ~0.8 μm typical, degrades as the edge wears | Ra ≤ 0.2 μm achievable, stable over the tool life |
| Thermal conductivity | ~80 W/m·K | 540–560 W/m·K — heat leaves the edge fast |
| Friction coefficient | ≈ 0.3 | ≈ 0.05 — lower cutting forces |
| Fracture toughness | Higher — tolerates interrupted cuts and impacts better | Lower — needs stable, vibration-free setups |
| Suited for | General-purpose CNC routing in wood, panels, acrylic; the economic standard | Very high-volume abrasive panel work; non-ferrous metals |
Figures are typical published values; actual tool life depends on the workpiece material, feed rate, depth of cut, machine condition and maintenance schedule.
Delivery Scope
Single cutter. Order by part number with the shank, cutting-edge diameter and cutting length stated in the specifications table below.
Why Choose VPOINT
- One-year warranty on every cutter — defects in material or workmanship are covered for 12 months from delivery.
- Custom tooling — diameters, shanks, cutting lengths and flute configurations built to your drawing or sample.
- Non-standard fabrication — sizes outside the standard catalogue, including special geometries.
- Resharpening service — cutters return to service after regrinding at a fraction of new-tool cost.
- Factory-direct since 2008 — ISO 9001 manufacturing in Sichuan and Dongguan, China; no trading intermediaries.
Send a drawing, a sample or a worn tool, and our engineering team will quote the exact specification you need.
Precision & Quality Control
Every cutter is inspected before shipment. Shank diameter, cutting-edge diameter, cutting length and overall length are measured against the values listed in the specifications table, and cutting edge runout is verified on the assembled tool.
Tools measuring outside tolerance do not ship. Inspection is performed under our ISO 9001 quality system, with batch records retained for traceability.
Specifications
| Part NO. | SHK | CED | CEL | OVL |
|---|---|---|---|---|
| 10380622 | 6 | 6 | 22 | 50 |
| 10380625 | 6 | 6 | 25 | 55 |
| 10380632 | 6 | 6 | 32 | 70 |
| 10380825 | 8 | 8 | 25 | 60 |
| 10380832 | 8 | 8 | 32 | 70 |
| 10380845 | 8 | 8 | 45 | 80 |
| 10381035 | 10 | 10 | 35 | 75 |
| 10381045 | 10 | 10 | 45 | 90 |
| 10381052 | 10 | 10 | 52 | 100 |
| 10381235 | 12 | 12 | 35 | 80 |
| 10381252 | 12 | 12 | 52 | 100 |
| 10381273 | 12.7 | 12.7 | 35 | 80 |
| 10381275 | 12.7 | 12.7 | 52 | 100 |
| 10381452 | 14 | 14 | 52 | 100 |
| 10381652 | 16 | 16 | 52 | 110 |
| 10381662 | 16 | 16 | 62 | 120 |
| 10381672 | 16 | 16 | 72 | 130 |
| 10382052 | 20 | 20 | 52 | 120 |
| 10382072 | 20 | 20 | 72 | 130 |
Key words: three blade composite knife, composite panel router bit, CNC laminated panel cutter, woodworking composite knife
