Product Description
CMT Profile Knives for Insert Shaper System - 1-37/64" x 5/32" (40x4mm), 2-Pack are precision-ground alloyed steel shaper knives designed for use with universal cutter heads in molding, profiling, and edge-shaping applications. Sold as a matched pair, these CMT 690.128 insert shaper knives deliver long-lasting cutting performance on a wide range of wood-based materials, giving woodworkers and production shops a reliable, consistent profile with every pass.
Key Features
- Alloyed steel construction - provides the durability and edge retention needed for demanding production molding and profiling work, reducing downtime between replacements.
- 1-37/64" cutting height with 5/32" maximum thickness (40x4mm) - precise dimensional sizing ensures a consistent, repeatable profile across all passes on compatible cutter heads.
- Sold as a pair (2 knives per pack) - both knives are matched and ready to install together, maintaining balance on the cutter head and eliminating the need to source individual blades separately.
- Part of the CMT Insert Shaper System profile family - compatible with universal cutter heads that accept 40x4mm knives, giving woodworkers access to a wide variety of profile options within the same tooling system.
- Long-lasting performance design - engineered for extended service life in shaper and moulder applications, reducing cost-per-cut over time.
Why This Product
- If you need a specific molding profile without the expense of a dedicated fixed cutter head, the CMT Insert Shaper System lets you swap profile knives in and out of universal cutter heads - giving you flexibility across cabinet door making, frame and panel work, and edge profiling without investing in multiple dedicated heads.
- The 40x4mm knife format is a widely used size in insert shaper systems, meaning these knives integrate into a broad range of universal cutter head setups, not just a single proprietary tool.
- Alloyed steel construction is specifically chosen for shaper knife applications where repeated impact against wood fibers demands toughness and sustained sharpness - making this a dependable choice for both hardwood and softwood profiling.
- Buying a matched pair ensures the cutter head remains balanced during operation, which directly contributes to smoother surface finishes and safer machine performance.
Specifications
- Manufacturer Part Number: 690.128
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64"
- Maximum Thickness: 5/32"
- Knife Size: 40x4mm
- Material: Alloyed Steel (SP)
- Quantity: 2 knives (sold as a pair)
- System: Insert Shaper System
Approved Applications
- Molding and profiling on spindle moulders and shapers
- Cabinet door making
- Edge profiling on hardwood and softwood
- Frame and panel work
- Profile shaping on MDF and chipboard
Frequently Asked Questions
What cutter heads are these profile knives compatible with?
These 690.128 profile knives are designed for use with universal cutter heads that accept 40x4mm insert shaper knives. They are part of the CMT Insert Shaper System, which is built around a variety of compatible universal cutter heads.
How many knives are included in one purchase?
Each purchase includes 2 knives - one matched pair. Both knives are intended to be installed together on the cutter head to maintain proper balance during operation.
What materials can these profile knives cut?
These alloyed steel profile knives are suitable for use on hardwood, softwood, MDF, and chipboard - covering the most common materials encountered in cabinet making, furniture production, and general woodworking applications.
Can I use these knives with other insert shaper systems beyond CMT brand cutter heads?
Yes. Because these knives follow the standard 40x4mm insert knife format, they are compatible with universal cutter heads from other systems that accept knives of the same 40mm x 4mm dimensions, not just CMT-branded heads.
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