Product Description
CMT 690.043 Profile Knives for Insert Shaper System are precision-ground alloyed steel shaper knives sized 1-37/64 in. x 5/32 in. (40x4mm), designed to deliver consistent molding profiles and smooth surface finishes when paired with compatible cutter heads. Sold as a pair, these profile knives are built for woodworkers who demand reliable, long-lasting performance on molding, cabinet door making, edge profiling, and frame-and-panel work. The 40x4mm format fits a variety of universal cutter head systems, making them a versatile addition to any spindle moulder or profile shaping setup.
Key Features
- Pair of Alloyed Steel Profile Knives (40x4mm): each knife is made of alloyed steel for durability and resistance to wear, so you can run more profiles before needing a replacement.
- 1-37/64 in. Cutting Height: provides a generous profile depth suited to molding, edge profiling, and decorative shaping tasks across a wide range of workpiece thicknesses.
- 5/32 in. Maximum Thickness: the compact knife body seats securely in the cutter head slot, ensuring stable engagement and reducing the risk of chatter during operation.
- Universal Cutter Head Compatibility: designed for use with CMT insert shaper cutter heads and other systems accepting 40x4mm knives, giving you flexibility across different machines and setups.
- Long-lasting Performance: the alloyed steel construction maintains a sharp cutting edge over extended use, reducing downtime and sharpening frequency in high-volume production environments.
- Sold as a Pair (2 knives): both knives are matched and ready to install together, ensuring balanced cutting and a symmetrical profile without the need to source individual pieces.
Why This Product
- Purpose-built for insert shaper systems: the 40x4mm knife size is engineered specifically for universal cutter head insert systems, so the fit is precise and setup time is minimal compared to improvised alternatives.
- Alloyed steel construction for sustained edge retention: woodworkers running hardwood, softwood, or engineered panel stock benefit from a material that holds its profile longer, meaning fewer interruptions in production runs.
- Profile consistency across every pass: precision-ground knives produce a repeatable molding profile, which matters when matching pieces for cabinet door sets, frames, or millwork runs where consistency is critical.
- Variety available within the system: profile number 043 is part of a broader range of CMT insert shaper profile knives, so you can expand your molding capabilities by adding complementary profiles using the same cutter heads you already own.
Specifications
- Manufacturer Part Number: 690.043
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm
- Material: Alloyed Steel (SP)
- Quantity: 2 knives (sold as a pair)
- System: Insert Shaper System
- Profile Number: 043
Approved Applications
- Molding and profiling on spindle moulders and profile shaping machines
- Cabinet door making
- Edge profiling on hardwood, softwood, and engineered panels
- Frame and panel work
What's Included
- 2x alloyed steel profile knives - 1-37/64 in. x 5/32 in. (40x4mm), profile number 043
Frequently Asked Questions
What cutter head systems are these profile knives compatible with?
These 40x4mm knives are designed for the CMT insert shaper cutter head system and are compatible with other universal cutter heads that accept 40mm or 40x4mm insert knives. Always confirm your cutter head's knife slot dimensions before installing.
What material are the CMT 690.043 knives made from?
The knives are made of alloyed steel (designated SP in the CMT system). This material is chosen for its edge retention and long-lasting performance across demanding profiling and molding applications on hardwood, softwood, and engineered panel materials.
How many knives come in a pack of CMT 690.043?
The CMT 690.043 is sold as a pair - you receive 2 matched profile knives per pack. Both knives share the same profile number 043 and dimensions (1-37/64 in. x 5/32 in. / 40x4mm), so they install together for balanced cutting performance.
Can these knives be used on MDF and chipboard in addition to solid wood?
Yes. The alloyed steel construction and the insert shaper system design make these knives suitable for use on hardwood, softwood, MDF, and chipboard - common materials in cabinet door making, edge profiling, and frame-and-panel production.
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