CMT 3-Piece High-Speed Steel Planer and Jointer Knives - 12 in. x 7/8 in. x 1/8 in. by CMT are precision-ground replacement knives engineered for stationary planer and jointer machines. Carefully crafted from fine European high-speed steel with a 13% tungsten (13%W) content, these HSS blades deliver a high-quality surface finish on dry softwood, dry hardwood, and even wet hardwood. Whether you are resurfacing rough lumber or jointing boards flat and true, this 3-piece knife set is built to provide consistent cutting performance and extended blade life through demanding woodworking applications.

Key Features

• 13% Tungsten High-Speed Steel (HS 13%W) construction - the elevated tungsten content increases edge hardness and heat resistance, meaning the knives stay sharper longer during continuous planing and jointing sessions.
• Precision-ground from fine European high-speed steel - each knife is carefully ground to exacting tolerances, delivering a high-quality surface finish and reducing tearout on both hardwood and softwood workpieces.
• Compatible with dry softwood, dry hardwood, and wet hardwood - versatile material compatibility means one set of knives handles a wide range of lumber species and moisture conditions without sacrificing cut quality.
• Set of 3 knives included - provides a complete replacement set for planer and jointer heads, so all cutting positions are refreshed at the same time for balanced, even stock removal.
• 12 in. x 7/8 in. x 1/8 in. dimensions - designed to fit standard 12-inch planer and jointer knife slots, making these a direct replacement for worn or chipped blades in compatible machines.

Why This Product

• Woodworkers who surface both softwood and hardwood species - including wet hardwood - benefit from the 13% tungsten HSS formula, which maintains a sharp, clean cutting edge across varying wood densities and moisture levels without frequent resharpening.
• Replacing all 3 knives simultaneously with a matched set ensures balanced cutting pressure across the full width of the planer or jointer head, reducing vibration and producing a more uniform surface finish.
• The careful precision-grinding process used on these knives translates directly into smoother board faces and edges straight off the machine, minimizing the hand-sanding or scraping steps needed before finishing.
• At 12 in. length, these knives are sized for common 12-inch stationary planers and jointers, making them a straightforward, no-modification replacement when existing blades are worn or damaged.

Specifications

• Manufacturer Part Number: 794.303
• Brand: CMT Orange Tools
• Diameter / Length: 12 in.
• Cutting Height: 7/8 in.
• Total Length (Thickness): 1/8 in.
• Material: HS 13%W (High-Speed Steel, 13% Tungsten)
• Quantity: 3 pieces

Approved Applications

• Planing - smoothing and dimensioning lumber on stationary planer machines
• Jointing - flattening and straightening board edges and faces on jointer machines
• Surface preparation of dry softwood, dry hardwood, and wet hardwood

What's Included

• 3x High-Speed Steel Planer and Jointer Knives (12 in. x 7/8 in. x 1/8 in.)