How hard is the cutting material?

The carbide grade used in this four teeth edgesealing knife delivers 7,000–9,000 HV / 1,500–2,000 HV hardness, which keeps the cutting edge sharp under continuous load.

Can you supply OEM or ODM parts, and how fast?

Yes. VPOINT TOOLS runs two factories in China (Chengdu and Dongguan) and accepts OEM and ODM orders. Standard samples and in-stock items ship within 24-48 hours; custom tooling is quoted per specification.

Which machines and materials is this four teeth edgesealing knife used for?

It is used on CNC routers, table saws and spindle moulders for cutting particle board, MDF, plywood, solid wood and aluminium composite panels. Chipbreaker or replaceable-insert models are available for high-volume production runs.

Do you ship worldwide?

Yes. VPOINT TOOLS ships carbide and PCD woodworking tooling to more than 100 countries. Tell us the destination and application and we will confirm freight cost and lead time.

Four Teeth Edgesealing Knife

Four-tooth edge sealing knives, D 25-26.8 mm, shank 6.35 mm, profile height 3.2-4.5 mm, working length 1-3 mm. Multi-edge trimming of edge banding flush with the panel face.

The VPOINT Four Teeth Edgesealing Knife is a replaceable-knife cutting tool. Ideal for edge banding trimming on panel lines, edge sealing and flush trimming and cabinet and furniture edge finishing.

Product Description

The four-tooth edge sealing knife is a multi-edge cutter on a 40Cr chrome-molybdenum steel body: four cutting edges share the load, so each edge lasts longer between changes. Cutting geometry and insert sizes follow the specifications table for the edging station.

Design and Construction

The four-tooth edge sealing knife is a multi-edge cutter on a 40Cr chrome-molybdenum steel body. The four cutting edges (Z4) share the cutting load, so each edge lasts longer between changes. Cutting diameters (D) run 25 to 26.8 mm with a 6.35 mm shank (d), profile heights (H) of 3.2 to 4.5 mm and working lengths (L) of 1 to 3 mm, matched to standard edge banding thicknesses.

How It Works

The four edges shear the edge banding flush with the panel face in one pass; as each edge dulls it is indexed to the next position, so the knife keeps cutting without coming out of the machine. The multi-edge geometry reduces the load per edge and keeps the trimmed edge free of crush marks.

Applications

Edge banding trimming on panel lines
Edge sealing and flush trimming
Cabinet and furniture edge finishing
Continuous edgebander operation

Suitable Materials

Melamine-faced particleboard and MDF
Laminate (HPL) sheets
Edge banding strips (PVC, ABS, wood veneer)
Veneered plywood

The steel body keeps its mounting reference across edge indexing, keeping trim depth stable across long production runs.

System Comparison: Replaceable Insert vs. Solid Knife

Insert-system knives keep the expensive part — the body — in service and replace only the cutting edge. For production cutterheads running repeat profiles, this is usually the lower-cost way to hold edge quality.

Property	Replaceable Insert Knife (This Tool)	Solid Profile Knife
Edge replacement	Swap the worn insert only; the steel body stays in service	Regrind or replace the complete tool
Body material	40Cr chrome-molybdenum steel body, reused across insert changes	Whole tool consumed as the edge wears
Downtime per edge change	Minutes — index or swap the insert	Send out for regrinding or buy a new tool
Profile changes	Fit a different insert geometry to the same body	New tool required per profile
Edge condition	Fresh edge on every change; consistent cut quality	Edge quality drifts between regrinds
Best suited for	Production cutterheads with repeat profiles	One-off profiles and low-volume work

Solid knives remain the better choice for one-off profiles and very low volumes.

Material Comparison: PCD vs. Tungsten Carbide

The figures below are typical industry data for production woodworking. PCD does not replace carbide in every job — carbide remains the right choice for low-volume general work — but on abrasive sheet goods the difference in blade life is decisive.

Property	PCD Diamond (This Blade)	Tungsten Carbide
Hardness	7,000–9,000 HV	1,500–2,000 HV
Tool life on MDF / particleboard / melamine	15–20× longer (500–1,200 h)	30–60 h (baseline)
Tool life on solid hardwood	10–13× longer (800–2,000 h)	80–150 h (baseline)
Tool life on abrasive boards (fibre cement / composites)	10–15× longer	baseline
Edge renewal	Limited regrinds — the economics come from 15–20× longer intervals between changes, not regrind count	4–6 regrinds at shorter intervals
Cut finish	Ra ≤ 0.2 μm achievable, stable over the blade life	Ra ~0.8 μm typical, degrades as teeth wear
Thermal conductivity	540–560 W/m·K — heat leaves the tooth tip fast	~80 W/m·K
Friction coefficient	≈ 0.05 — lower cutting forces and heat	≈ 0.3
Suited for	Abrasive engineered wood, laminates, composites, fibre cement, non-ferrous metals	General-purpose solid-wood work; the economic choice at lower volumes

Figures are typical published values; actual blade life depends on the workpiece material, feed rate, depth of cut, machine condition and maintenance schedule.

Delivery Scope

Single knife. Order by part number with the diameter and working 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 — geometries, diameters, cutting lengths and shank configurations built to your drawing or sample.
Non-standard fabrication — profiles and sizes outside the standard catalogue, including profile restoration and special applications.
Resharpening service — cutters return to service after regrinding, restoring near-original edge performance at a fraction of new-tool cost.
Factory-direct since 2008 — ISO 9001 manufacturing in Sichuan and Dongguan, China; 40Cr chrome-molybdenum steel bodies; 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 at micron level before shipment. Cutting edge condition, cutting diameter (ØD), shank diameter (Ød), cutting length (L1) and overall length (L) are measured against the values listed in the specifications table, and cutting edge runout and concentricity are verified on the assembled tool.

Tools measuring outside tolerance are reground or scrapped — they do not ship. Inspection is performed under our ISO 9001 quality system, with batch records retained for traceability.

Specifications

Part No.	D	d	H	L
240506001	25	6.35	3.2	1
240506002	25	6.35	3.2	1
240506003	25	6.35	3.34	2
240506004	25	6.35	3.34	2
240506005	25	6.35	3.2	1.5
240506006	25	6.35	3.2	1.5
240506007	26.8	6.35	4.5	3
240506008	26.8	6.35	4.5	2
240507001	25	6.35	3.34	2
240507002	25	6.35	3.34	2
240508001	33.6	6.35	2.52	1.5
240508002	33.6	6.35	2.52	1.5
240508003	33.6	6.35	2.52	2
240508004	33.6	6.35	2.52	2
240508005	33.6	6.35	2.52	5
240508006	33.6	6.35	2.52	5

Frequently Asked Questions

What is the Four Teeth Edgesealing Knife used for?

The four-tooth edge sealing knife is a multi-edge cutter on a 40Cr chrome-molybdenum steel body.

How do I choose the right size?

Refer to the specification table on this page: part numbers fix the cutting diameter, shank and cutting length. State the diameter, shank and cutting length you need when ordering.

Which materials does it suit?

Typical materials include Melamine-faced particleboard and MDF, Laminate (HPL) sheets, Edge banding strips (PVC, ABS, wood veneer). Confirm the material grade and machining conditions for the specific tool before ordering.

Can I order a custom version?

Yes. Send the profile drawing or item code together with the workpiece material, machine model, cutting direction and quantity. Tools are produced to order, and each tool is packed in an individual plastic box.

Key words: edge banding trimming knife, four tooth edge sealing cutter, edge bander knife, edge trimming tool