Product Description
CMT 690.040 Profile Knives for Insert Shaper System are precision-engineered shaper knives designed for use with CMT universal cutter heads, giving woodworkers a reliable solution for consistent molding profiles and smooth surface finishes. Sold as a pair of 2 knives in the 40x4mm (1-37/64 in. x 5/32 in.) size, these alloyed steel profile knives deliver long-lasting cutting performance across a wide range of wood shaping and edge profiling tasks. Whether you are producing cabinet door profiles, decorative moldings, or frame-and-panel work, this CMT knife set slots into the insert shaper system to keep your setup versatile and production-ready.
Key Features
- Pair of 2 knives in 40x4mm (1-37/64 in. x 5/32 in.) size - two matched knives per pack means you have balanced cutting from the start, reducing vibration and promoting even, consistent profiles.
- Made of alloyed steel (SP grade material) - alloyed steel construction resists wear and maintains a sharp cutting edge through extended production runs on hardwood, softwood, and engineered wood panels.
- Designed for CMT universal cutter heads - compatible with the CMT insert shaper system cutter heads, so you can swap profiles quickly without changing the entire head, saving setup time between jobs.
- Long-lasting performance - durable material and precise profile geometry mean fewer tool changes and more consistent results across repeat cuts and high-volume shaping work.
- 1-37/64 in. cutting height - the generous cutting height allows the knife to produce a full, well-defined profile in a single pass, reducing the need for multiple passes and finishing steps.
- 5/32 in. maximum thickness - the 5/32 in. knife body fits securely in compatible cutter head slots, ensuring rigid clamping and minimal deflection during cutting.
Why This Product
- The insert shaper system design lets you build a library of profile knives for a single cutter head, making this pair a cost-effective way to expand your molding and profiling capabilities without investing in additional cutter head bodies.
- Alloyed steel construction maintains cutting-edge integrity through demanding shaping operations on hardwood and engineered panels, reducing downtime caused by frequent resharpening or replacement.
- At 40x4mm, this knife size is a widely used standard in spindle moulders and profile machines, making the 690.040 a practical addition to shops that already work within the CMT 692-series cutter head platform.
- Selling in pairs ensures both knife seats in the cutter head are loaded with matched blades right out of the package, supporting balanced rotation and a cleaner surface finish on your workpieces.
Specifications
- Manufacturer Part Number: 690.040
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size (metric): 40x4mm
- Material: Alloyed Steel (SP)
- Quantity: 2 knives (sold as a pair)
- System Compatibility: CMT Insert Shaper System
Approved Applications
- Molding and profiling on spindle moulders and profile machines
- Cabinet door making and frame-and-panel work
- Edge profiling on hardwood and softwood
- Decorative shaping on MDF and chipboard
Frequently Asked Questions
How many knives are included in this pack?
This listing includes 2 profile knives - sold as a matched pair intended for use together in compatible cutter heads.
What cutter heads are these knives compatible with?
These 40x4mm profile knives are designed for use with the CMT insert shaper system universal cutter heads. Confirm your cutter head accepts 40mm knives before ordering.
What material are the CMT 690.040 knives made from?
The knives are made of alloyed steel (SP grade), which provides durability and long-lasting cutting performance during shaping and profiling operations on a variety of wood types including hardwood, softwood, MDF, and chipboard.
What do the knife dimensions 1-37/64 in. x 5/32 in. refer to?
The 1-37/64 in. dimension refers to the cutting height of the knife - the maximum profile depth it can produce. The 5/32 in. dimension refers to the maximum knife body thickness, which must match the slot dimensions of your cutter head for proper and secure clamping.
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