Product Description
CMT 690.109 Profile Knives for Insert Shaper System are a matched pair of alloyed steel shaping knives sized 1-37/64 in. x 5/32 in. (40x4mm), designed to work with CMT universal cutter heads for precise molding and profiling in woodworking applications. These KSS-format insert knives deliver long-lasting performance on hardwood, softwood, MDF, and chipboard, making them a practical choice for cabinet door making, edge profiling, frame and panel work, and production molding on spindle moulders and profile machines alike.
Key Features
- Alloyed Steel Construction - provides durable, long-lasting cutting performance across repeated shaping passes on a wide range of wood-based materials.
- Profile Number 109 Geometry - delivers a specific, repeatable molding profile so every workpiece comes out consistent, reducing setup time and scrap.
- KSS 40x4mm Knife Format - the 1-37/64 in. x 5/32 in. dimensions match the insert slot dimensions of CMT universal cutter heads, ensuring a secure, chatter-free fit.
- Pair of 2 Knives Included - both knives are matched and supplied together so the cutter head is balanced right out of the box, supporting safer, smoother operation.
- Part of CMT Insert Shaper System - compatible with CMT 692 series universal cutter heads and other insert shaper systems accepting 40mm knives, giving you a broad range of profile options from a single tool body.
Why This Product
- Switching profiles on a spindle moulder or profile machine is faster and more economical with the insert knife system - swap only the knives rather than replacing an entire cutter head.
- The alloyed steel material and precision-ground profile hold their edge through long production runs, reducing the frequency of changeovers and downtime in a busy shop.
- Buying a matched pair means both sides of the cutter head are loaded with knives of identical geometry and mass, which is essential for balanced rotation and a clean, tear-free surface finish.
- Profile 109 expands the versatility of a CMT universal cutter head without requiring a dedicated shaper cutter for every molding shape - one cutter head body handles a wide variety of profiles through interchangeable knife sets.
Specifications
- Model Number: 690.109
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm (1-37/64 in. x 5/32 in.)
- Material: Alloyed Steel (SP)
- Knife Format: KSS 40x4mm
- Quantity: 2 knives (1 pair)
- Compatible System: CMT Insert Shaper System (CMT 692 series universal cutter heads)
Approved Applications
- Molding and Profiling
- Cabinet Door Making
- Edge Profiling
- Frame and Panel Work
- Spindle Moulder Operations
- Profile and Edging Machine Operations
What's Included
- 2x CMT 690.109 Profile Knives (1 matched pair, KSS 40x4mm)
Frequently Asked Questions
What cutter heads are these knives compatible with?
The CMT 690.109 knives are designed for use with CMT 692 series universal cutter heads and other insert shaper systems that accept 40mm profile knives in the KSS 40x4mm format.
Why do these knives come in a pair, and does it matter for installation?
Yes - it matters significantly. Insert cutter heads require knives to be loaded in matched pairs on opposite sides to maintain rotational balance. An unbalanced cutter head can cause vibration, poor surface finish, and unsafe operating conditions. The 690.109 comes as a pre-matched pair of 2 to ensure proper balance right from installation.
What materials can these profile knives cut?
These alloyed steel insert knives are suited for shaping and profiling hardwood, softwood, MDF, and chipboard - common materials in cabinet door making, frame and panel work, and edge profiling applications.
Can I use these knives on a spindle moulder or just a dedicated shaper?
These knives are compatible with spindle moulders, moulders, and profile and edging machines that accept CMT insert shaper system cutter heads using the KSS 40x4mm knife format. They are not machine-specific beyond that compatibility requirement.
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