Two Blade Woodworking Straight Knife

Two-blade woodworking straight knives, SHK 3.175–20 mm, CED 1–20 mm, CEL 4–80 mm. General-purpose two-flute bits for CNC routing.

The VPOINT Two Blade Woodworking Straight Knife is a replaceable-knife cutting tool. Ideal for grooving and slotting on CNC routers, panel sizing and shaping and general woodworking routing.

Product Description

Design and Construction — a VPOINT router bit tool for CNC routing and nesting, sized for MDF and similar workpieces. The specification table below lists dimensions; the performance data table gives standard reference speeds and feeds to start with, and the FAQ covers selection, parameters and service. ISO 9001 production, batch-verified, custom sizes from drawings.

Design and Construction

The two-blade woodworking straight knife carries two straight flutes on a tungsten carbide body. Shank diameters (SHK) run 3.175–20 mm, cutting-edge diameters (CED) 1–20 mm, cutting edge lengths (CEL) 4–80 mm and overall lengths (OVL) 38–120 mm, as listed in the specifications table.

How It Works

Two straight flutes balance chip clearance and finish: each flute shears a clean wall while the other clears the chip, a general-purpose geometry for grooving, slotting and sizing in wood and panel products. Wide diameter and length coverage lets one tool family serve most CNC routing tasks.

Applications

Grooving and slotting on CNC routers
Panel sizing and shaping
General woodworking routing
Furniture component machining

Suitable Materials

Solid wood
MDF and particleboard
Plywood and veneered panels
Laminated boards

The two-flute straight geometry holds cut width and wall finish across general routing work.

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
10170104	3.175	1	4	38
10171506	3.175	1.5	7	38
10170212	3.175	2	12	38
10170222	3.175	2	22	45
10172512	3.175	2.5	12	38
10172522	3.175	2.5	22	45
10173112	3.175	3.175	12	38
10173125	3.175	3.175	25	45
10173132	3.175	3.175	32	55
10170408	4	4	8	45
10170417	4	4	17	45
10170425	4	4	25	50
10170432	4	4	32	55
10170442	4	4	42	70
10170452	4	4	52	80
10170625	6	6	25	50
10170632	6	6	32	60
10170642	6	6	42	70
10170652	6	6	52	80
10170825	8	8	25	60
10170832	8	8	32	60
10170842	8	8	42	80
10170852	8	8	52	90
10171032	10	10	32	70
10171042	10	10	42	80
10171052	10	10	52	100
10171062	10	10	62	110
10171232	12	12	32	70
10171242	12	12	42	80
10171252	12	12	52	100
10171262	12	12	62	110
10171280	12	12	80	120
10171274	12.7	12.7	42	90
10171275	12.7	12.7	52	100
10171276	12.7	12.7	62	110
10171278	12.7	12.7	80	120
10171442	14	14	42	90
10171452	14	14	52	100
10171642	16	16	42	90
10171652	16	16	52	100
10171662	16	16	62	110
10171672	16	16	72	120
10172052	20	20	52	100
10172062	20	20	62	110
10172072	20	20	72	120

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Performance Data

Standard reference values for guidance only — always adjust to machine rigidity, clamping and tool wear, and confirm on the actual workpiece.

Material	Typical spindle speed	Typical feed	Notes
MDF	18,000–22,000 rpm	6–10 m/min	Nesting and grooving; watch heat at small diameters
particleboard	16,000–20,000 rpm	5–8 m/min	Reduce feed if the face starts to chip
plywood	16,000–20,000 rpm	5–8 m/min	Keep the compression or shear geometry inside the panel
veneered board	18,000–20,000 rpm	5–7 m/min	Light finish passes protect the veneer
solid wood	15,000–20,000 rpm	4–9 m/min	Grain direction affects finish; climb-cut when possible
hardwood	14,000–18,000 rpm	3–7 m/min	Lower feed in dense grain

Frequently Asked Questions

What finish can I expect on the edge?

With sharp knives and a stable feed the edge comes off clean enough to skip sanding on most boards; test on offcuts first.

How often should I rotate or replace the knives?

Rotate at the first sign of fuzzing or burn; a fresh edge costs less than a rejected panel.

Any special clamping notes?

Seat the knife fully, torque evenly and re-check after the first minute of cutting.

Where do these reference values come from?

They are standard reference ranges for this tool family, compiled from our specification sheets and common workshop practice — always confirm on the actual workpiece.

Sources & standards: ISO 9001 quality management · UNSPSC commodity codes · eClass product classification

Related Search Terms

solid carbide end mill, CNC end mill, compression router bit, upcut spiral bit, downcut spiral bit, single flute end mill, two flute end mill, spiral flutes end mill, slotting end mill, profiling end mill, steel slotting cutter, aluminium end mill, acrylic end mill, nano coating end mill, corn milling cutter