Product Description
CMT 794.152 3-Piece High-Speed Steel Planer and Jointer Knives are precision-ground cutting tools engineered for stationary planers and jointer machines. Carefully manufactured from fine European high-speed steel with a 13% tungsten (W) alloy content, these 6 inch knives deliver consistently smooth, high-quality surface finishes across a wide range of wood species - from dry softwoods to both dry and wet hardwoods. Whether you are flattening rough-sawn boards on a benchtop planer or truing edges on a jointer, this set of 3 replacement knives is built to maintain cutting performance through demanding woodworking tasks.
Key Features
- High-Speed Steel with 13% Tungsten Alloy (HS 13%W) - the elevated tungsten content increases hardness and heat resistance, which means the cutting edge holds up longer between sharpenings during heavy planing sessions.
- Carefully Ground from Fine European High-Speed Steel - precision grinding from premium source material ensures consistent edge geometry across all 3 knives, resulting in a uniform, high-quality finish on every pass.
- 6 in. Length with 3/4 in. Cutting Height - sized to fit a wide range of planer and jointer machines, making these a practical direct-replacement option for worn or chipped factory knives.
- Suitable for Dry Softwood, Dry Hardwood, and Wet Hardwood - the HSS 13%W composition resists the abrasive and moisture-related wear that wet hardwood introduces, expanding the range of materials you can process without swapping knife sets.
- Set of 3 Knives Included - a complete matched set means all cutting positions in your planer or jointer head are replaced at the same time, preventing uneven stock removal caused by mismatched knife wear.
Why This Product
- Handles wet hardwood where lesser knife steels struggle - the 13% tungsten high-speed steel formulation is specifically suited for cutting wet and dry hardwood as well as dry softwood, so one set of knives covers a broad range of milling work without compromising edge life.
- Produces a high-quality finish directly off the machine - precision-ground edges reduce tearout and leave surfaces that require less sanding, saving time on finishing steps for furniture, cabinetry, and millwork projects.
- Fine European HSS construction means consistent quality across all 3 blades - matched knife sets ground from the same premium steel batch reduce vibration and chatter caused by inconsistent blade heights, protecting both your workpiece and your machine.
- Complete 3-piece set replaces a full knife head at once - replacing all knives simultaneously is the recommended approach for balanced cutting, making this set a practical, ready-to-install solution for routine planer and jointer maintenance.
Specifications
- Manufacturer Part Number: 794.152
- Brand: CMT Orange Tools
- Total Length: 6 in.
- Cutting Height: 3/4 in.
- Thickness: 1/8 in.
- Material: HS 13%W (High-Speed Steel, 13% Tungsten)
- Quantity: 3 pieces
Approved Applications
- Planing - stationary planer machines
- Jointing - jointer machines
- Surface preparation on dry softwood
- Surface preparation on dry hardwood
- Surface preparation on wet hardwood
What's Included
- 3x High-Speed Steel Planer and Jointer Knives (6 in. x 3/4 in. x 1/8 in.)
Frequently Asked Questions
What type of steel are these planer knives made from?
These knives are manufactured from high-speed steel with a 13% tungsten (HS 13%W) alloy content. The tungsten content increases the hardness and heat resistance of the cutting edge, which helps the knives maintain sharpness longer during continuous planing and jointing operations.
Can these knives be used to plane wet hardwood?
Yes. According to the product data, these HSS knives are suitable for cutting dry softwood, dry hardwood, and wet hardwood. The 13% tungsten steel composition provides the edge retention needed to handle the additional abrasion and moisture associated with wet hardwood species.
Why is it important to replace all 3 planer knives at the same time?
Replacing all knives in the cutterhead simultaneously ensures each blade operates at the same height and wear level. Mismatched knife heights can cause uneven stock removal, vibration, and a poor surface finish. This 3-piece set is packaged to allow a complete cutterhead change in a single service interval.
What machines are these knives compatible with?
These knives are designed for use in stationary planer and jointer machines that accept 6 in. x 3/4 in. x 1/8 in. straight planer knives. Always verify your machine's knife slot dimensions against these specifications before installing.
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