Product Description
CMT 690.170 Profile Knives for Insert Shaper System are precision-engineered shaper knives designed for woodworkers who demand consistent, repeatable molding profiles. Sold as a pair, these 40x4mm knives (1-37/64 in. x 5/32 in.) are made from alloyed steel for long-lasting cutting performance in demanding production and shop environments. Compatible with CMT universal cutter heads, they expand your shaping capability across a wide range of profiling and molding applications - making them an essential addition to any spindle moulder or profile-and-edging machine setup.
Key Features
- Alloyed steel construction - delivers durability and edge retention through repeated use on hardwood, softwood, MDF, and chipboard, reducing downtime from frequent sharpening or replacement.
- 40x4mm knife size (1-37/64 in. x 5/32 in.) - precise dimensions ensure a secure, accurate fit within CMT universal cutter heads, producing clean, consistent profile cuts every time.
- 3mm radius profile - creates a smooth, defined curve suited for molding, edge profiling, cabinet door components, and decorative frame work.
- Sold as a matched pair - both knives are ground to the same profile, so you get balanced cutting action that reduces vibration and improves surface finish quality.
- Part of the CMT insert shaper system - integrates with CMT universal cutter heads, giving you the flexibility to swap profiles quickly without replacing the entire tooling assembly.
Why This Product
- Woodworkers who run production molding or cabinet door work benefit from interchangeable profile knives - rather than investing in multiple dedicated cutter heads, swapping a single pair of 40x4mm insert knives gives you a new profile in minutes.
- The alloyed steel material is engineered for long-lasting performance, meaning fewer interruptions on the job and lower tooling costs over time compared to standard knife steel.
- With a 3mm radius and a cutting height of 1-37/64 in., this profile is well suited for edge profiling and decorative molding on a variety of solid wood and sheet material stock.
- Buying a matched pair ensures both knives share the same ground profile, which is critical for balanced cuts on a spindle moulder or moulder - reducing chatter and delivering a cleaner surface right off the machine.
Specifications
- Manufacturer Part Number: 690.170
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm
- Radius: 3mm
- Material: Alloyed Steel (SP)
- Quantity: 2 knives (sold as a pair)
- System Compatibility: CMT Insert Shaper System - Universal Cutter Heads
Approved Applications
- Molding and profiling on hardwood and softwood
- Cabinet door making
- Edge profiling
- Frame and panel work
- Decorative shaping on MDF and chipboard
Frequently Asked Questions
What cutter heads are these profile knives compatible with?
These 690.170 knives are designed for use with CMT universal cutter heads that accept 40mm insert knives as part of the CMT Insert Shaper System. This allows you to use a single cutter head body across a wide variety of profile knife pairs.
How many knives come in this package?
The CMT 690.170 is sold as a pair - you receive 2 matching profile knives in one package. Both knives share the same ground profile for balanced, vibration-free cutting.
What materials can these shaper knives cut?
These knives are suited for use on hardwood, softwood, MDF, and chipboard. The alloyed steel construction is engineered to maintain edge performance across these common woodworking materials.
What is the profile radius on the 690.170 knife?
The 690.170 profile knives feature a 3mm radius. This radius, combined with the 1-37/64 in. cutting height, makes these knives well suited for edge profiling, decorative molding, and frame and panel applications.
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