Product Description
CMT 690.126 Profile Knives for Insert Shaper System are a matched pair of alloyed steel shaper knives sized 1-37/64 in. x 5/32 in. (40x4mm), designed for use with CMT universal cutter heads in the insert shaper system. These KSS-style profile knives deliver consistent molding and profiling results across a wide range of woodworking operations, making them a reliable choice for cabinetmakers, furniture builders, and millwork professionals who depend on repeatable profile accuracy and long-lasting edge retention.
Key Features
- Alloyed Steel Construction - the SP-grade material provides durability and edge retention during repeated profiling passes, reducing the frequency of knife changes and downtime at the machine.
- 1-37/64 in. Cutting Height - a generous cutting height allows the knife to engage the full profile depth in a single pass, producing clean, consistent molding profiles without multiple setups.
- 5/32 in. (4mm) Knife Thickness - the precise 40x4mm format ensures a secure, stable fit in compatible insert cutter heads, minimizing vibration and improving surface finish quality.
- Universal Cutter Head Compatibility - designed for use with CMT universal cutter heads in the insert shaper system, so one set of heads supports a wide variety of profile knives for maximum tooling versatility.
- Sold as a Matched Pair - both knives in the pair are precision-matched to the same profile, ensuring balanced cutting and uniform results across the full width of the workpiece.
- Long-Lasting Performance - engineered for sustained use on demanding woodworking applications, reducing overall cost-per-cut over the life of the knife set.
Why This Product
- The 40x4mm KSS format is compatible with CMT universal cutter heads, meaning woodworkers can build a single cutter head system and simply swap profile knives to produce a wide variety of molding shapes - an efficient and cost-effective approach to shaper tooling.
- Alloyed steel construction gives these profile knives lasting performance through repeated use, making them a practical choice for production environments where consistent profile quality is required run after run.
- The matched-pair configuration ensures both knives deliver the same profile geometry, which directly translates to balanced cutting forces and a smooth, even surface finish on hardwood, softwood, MDF, and chipboard.
- At 1-37/64 in. cutting height, the knives provide substantial profile engagement, well-suited for molding, edge profiling, and cabinet door work where a full, well-defined profile is critical to the finished piece.
Specifications
- Manufacturer Part Number: 690.126
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm
- Material: SP (alloyed steel)
- System: Insert Shaper System - universal cutter heads
- Quantity: 2 knives (matched pair)
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
- Shaping MDF and chipboard components
Frequently Asked Questions
What cutter heads are these profile knives compatible with?
These 690.126 profile knives are designed for use with CMT universal cutter heads in the insert shaper system. The 40x4mm (1-37/64 in. x 5/32 in.) KSS format is the key dimension to match when selecting compatible cutter heads.
How many knives are included in one purchase?
Each purchase includes 2 knives sold as a matched pair. Both knives carry the same profile, ensuring balanced cutting when mounted in the cutter head.
What materials can these profile knives cut?
These alloyed steel shaper knives are suited for use on hardwood, softwood, MDF, and chipboard - common materials in cabinet making, furniture production, and general millwork applications.
What does the 40x4mm knife size mean for my setup?
The 40mm dimension refers to the cutting height of the knife, and the 4mm dimension refers to the knife thickness. Both measurements must match the slot dimensions of your cutter head to ensure a proper, secure fit during operation. Always verify your cutter head accepts 40x4mm KSS-style knives before mounting.
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