Product Description
CMT Planer and Jointer Knives HS 18%W 400 x 30 x 3mm - 2 Pack by CMT are precision-milled high-speed steel blades designed for stationary planers and jointers. Balanced and ground to exact tolerances, these metric knives deliver razor-sharp cutting performance across a range of wood surfaces, making them a reliable choice for woodworkers who demand consistent, flat results on softwood, hardwood, and sheet materials. The 400mm blade length and 3mm thickness make this set a direct-fit replacement for compatible metric planer and jointer machines, and the matched 2-piece package supports balanced cutting on both sides of the cutterhead.
Key Features
- High-Speed Steel (HSS) Construction - 18% Tungsten: The 18% tungsten HSS material maintains a sharp cutting edge longer than standard steel, reducing downtime between sharpenings and keeping your planer or jointer performing at its best.
- Balanced and Milled Knives: Each knife is precision-balanced and milled to tight tolerances, helping eliminate vibration during operation for smoother surface finishes and more accurate stock removal.
- Mirror Finish Cutting Edges: The mirror finish applied to the knife surfaces produces razor-sharp, extremely durable cutting edges that translate directly into cleaner cuts and less tear-out on the workpiece.
- Metric Dimensions - 400 x 30 x 3mm: Precise metric sizing ensures a proper fit in compatible metric planer and jointer machines, removing guesswork from replacement blade selection.
- 2-Piece Matched Package: Sold as a matched pair so both knives can be replaced simultaneously, maintaining balanced cutter performance and consistent material removal across the full width of the cut.
Why This Product
- The 18% tungsten high-speed steel composition holds a cutting edge under demanding conditions, making this set well suited for shops that regularly surface both dry softwood and hardwood without frequent blade changes.
- Precision balancing and milling mean the knives seat consistently in the cutterhead, reducing setup time and helping ensure flat, even surfaces right from the first pass.
- The mirror finish on the blade faces is not cosmetic - it contributes directly to edge sharpness and durability, so cuts stay clean and smooth over an extended service life.
- At 400 x 30 x 3mm, this is a standard metric format that fits a wide range of stationary planers and jointers, making it a practical stock replacement for shops running metric-spec machinery.
Specifications
- Manufacturer Part Number: 792.400.30
- Brand: CMT Orange Tools
- Material: High-Speed Steel (HSS)
- Total Length: 400mm
- Cutting Height: 30mm
- Cutting Depth: 30mm
- Teeth Thickness: 3mm
- Diameter: 40mm
- Quantity: 2 pieces per package
Approved Applications
- Planing
- Jointing
- Surface Preparation
- Dry Softwood
- Dry and Wet Hardwood
- Plywood
What's Included
- 2x CMT 400 x 30 x 3mm High-Speed Steel Planer and Jointer Knives
Frequently Asked Questions
What type of steel are these planer and jointer knives made from?
These knives are manufactured from High-Speed Steel (HSS) with an 18% tungsten content. This formulation provides excellent edge retention and durability compared to standard steel, making it appropriate for demanding planing and jointing tasks on both softwood and hardwood.
How many knives are included in this package?
This package contains 2 matched knives. Replacing both knives at the same time helps maintain balanced cutting performance across the full width of the cutterhead.
What are the exact dimensions of these jointer and planer blades?
The knives measure 400mm in total length, 30mm in cutting height, 30mm in cutting depth, and 3mm in thickness. These are standard metric dimensions intended for compatible metric stationary planers and jointers.
Can these knives be used on materials other than solid wood?
Yes. In addition to dry softwood and both dry and wet hardwood, these knives are also suitable for use on plywood, making them a versatile replacement blade set for general woodworking and surface preparation tasks.
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