CMT Solid Carbide Insert Knives - 12x12x1.5mm, 4 Cutting Edges (10-Piece Pack) are precision-ground, reversible throwaway knives engineered for demanding profiling, molding, and grooving operations on spindle moulders, profile machines, and compatible insert shaper systems. Manufactured from K2250 solid tungsten carbide, these indexable insert knives deliver extended cutting life across hardwood, softwood, MDF, chipboard, and plywood - giving woodworking professionals a reliable, high-performance replacement knife solution in a convenient 10-pack format.

Key Features

• K2250 Solid Carbide Material - tungsten carbide grade K2250 resists wear and heat buildup during heavy profiling cuts, meaning fewer knife changes and consistently clean results across dense and abrasive materials.
• 4 Cutting Edges at 35 deg. Angle - each reversible knife provides four usable cutting edges, so you simply rotate to a fresh edge when one dulls rather than replacing the entire knife, dramatically extending the value of each piece.
• Reversible Throwaway Design - when all four edges are spent, the knife is replaced rather than resharpened, eliminating downtime spent at the grinding bench and keeping your cutter head running to exact tolerances every time.
• Precision 12x12x1.5mm Dimensions - tight dimensional tolerances on length, height, and thickness (K192 standard) ensure the insert seats consistently in compatible cutter head pockets, reducing vibration and delivering repeatable profile accuracy.
• 10-Piece Pack - having a full stock of replacement inserts on hand minimizes production interruptions, so high-volume shops can keep running without waiting on a reorder.

Why This Product

• Four independent cutting edges per knife mean you get up to four times the usable life from each insert - a practical advantage for shops running long production runs on hardwood, MDF, or chipboard where edge wear is accelerated.
• The 35 deg. cutting angle is built into the insert geometry itself, so there is no need to adjust cutter head settings when rotating to a fresh edge - each edge performs identically for consistent profile quality throughout the knife's life.
• K2250 carbide grade is optimized for the abrasion resistance required by composite sheet goods like MDF and chipboard, making these inserts a dependable choice for shops processing both solid wood and engineered panels.
• The 12-piece standard 12x12x1.5mm footprint fits established indexable cutter head systems, meaning compatible machines already in your shop can accept these inserts without adapters or modifications.

Specifications

• Manufacturer Part Number: 790.120.03
• Brand: CMT Orange Tools
• Total Length: 12mm
• Cutting Depth: 12mm
• Teeth Thickness: 1.5mm
• Cutting Angle: 35 deg.
• Number of Cutting Edges: 4
• Material: K2250 Solid Carbide
• Knife Type: Reversible Throwaway (Indexable Insert)
• Quantity: 10-Piece Pack

Approved Applications

• Profiling and Molding
• Edge Profiling
• Rabbeting
• Grooving
• Jointing

Frequently Asked Questions

How many usable cutting edges does each insert knife provide?

Each CMT 790.120.03 insert knife has 4 cutting edges set at a 35 deg. angle. When one edge dulls, simply rotate the insert to the next edge. Once all four edges have been used, the knife is discarded and replaced with a fresh insert from the pack.

What material are these insert knives made from, and why does it matter?

These knives are manufactured from K2250 solid carbide - a tungsten carbide grade selected for high wear resistance and durability. This makes them well suited for cutting hardwood, softwood, MDF, chipboard, and plywood, including materials that wear conventional high-speed steel knives quickly.

What do the knife dimensions 12x12x1.5mm refer to?

The dimensions follow the L x H x K convention noted in the product data: L (total length) is 12mm, H (cutting depth) is 12mm, and K (teeth thickness) is 1.5mm. These measurements conform to the K192 standard used for indexable insert cutter head systems.

How many insert knives come in one pack?

Each pack contains 10 solid carbide insert knives, giving you a ready supply of replacement inserts to keep your cutter head running without interruption during production work.