CMT 3-Piece High-Speed Steel Planer and Jointer Knives - 4" Length by CMT are precision-ground replacement knives crafted from fine European high-speed steel with a 13% tungsten (13%W) composition. Designed for stationary planers and jointers, these HSS blades deliver a high-quality surface finish when working with dry softwood, dry hardwood, and even wet hardwood. Each set includes 3 knives sized at 4" x 5/8" x 1/8", giving woodworkers a complete, ready-to-install replacement kit for smooth, consistent material removal and flat, clean planing results.

Key Features

• 13% Tungsten High-Speed Steel (HS 13%W) construction - this elevated tungsten content provides greater edge retention and cutting durability compared to standard steel, reducing the frequency of sharpening or replacement during heavy planing and jointing sessions.
• Carefully ground from fine European high-speed steel - precision grinding ensures each knife edge is consistent and uniform, translating directly to a smoother, higher-quality surface finish on the workpiece.
• Compatible with both dry softwood and dry and wet hardwood - broad material compatibility means a single set of knives can handle a wide range of woodworking projects without needing to swap to a different blade type.
• Set of 3 planer and jointer knives included - having all three knives in one pack lets you replace the full cutter head set at once, keeping the machine balanced and performing evenly across the full cutting width.
• Sized at 4" x 5/8" x 1/8" - these dimensions are matched to common stationary planer and jointer knife slots, making them a practical direct-fit replacement for machines that accept this knife profile.

Why This Product

• A complete 3-knife replacement set in one purchase - replacing all knives simultaneously restores cutter head balance and ensures uniform planing depth across the full 4" cutting width, eliminating the uneven results that occur when only one or two worn knives are swapped out.
• Formulated for real-world hardwood conditions - the 13%W high-speed steel alloy is suited for both dry and wet hardwood, making these knives a practical choice for shops that work with freshly milled or green lumber as well as kiln-dried stock.
• High-quality finish from a precision-ground edge - for woodworkers who depend on planers and jointers to prepare stock for glue-ups, cabinetry, or finish carpentry, the carefully ground edge means less sanding time after machining.
• CMT European high-speed steel quality - ground from fine European HSS material, these knives represent a level of manufacturing precision that supports consistent, repeatable results across many planing and jointing passes.

Specifications

• Manufacturer Part Number: 794.101
• Brand: CMT Orange Tools
• Length: 4"
• Cutting Height: 5/8"
• Thickness: 1/8"
• Material: HS 13%W (High-Speed Steel, 13% Tungsten)
• Quantity: 3 pieces

Approved Applications

• Planing - dimensioning and smoothing lumber on stationary planer machines
• Jointing - flattening and squaring board faces and edges on jointer machines
• Surface preparation - producing a flat, clean surface ready for finishing, gluing, or further machining
• Cutting dry softwood
• Cutting dry hardwood
• Cutting wet hardwood

What's Included

• 3x HSS planer and jointer knives - 4" x 5/8" x 1/8" - HS 13%W