Product Description
CMT 690.039 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-format profile knives deliver long-lasting performance on a wide range of molding and profiling tasks, giving woodworkers a reliable, consistent result when working with hardwood, softwood, MDF, and chipboard. Sold as a pair of 2 knives, the 690.039 set is part of a broad family of profile knife options compatible with the CMT universal cutter head platform.
Key Features
- Alloyed steel construction - provides the hardness and edge retention needed for long-lasting performance across demanding woodworking applications, reducing the frequency of replacements and downtime.
- Profile number 039 geometry - delivers a specific, repeatable molding profile so each cut matches the last, supporting consistent results on production runs and custom millwork alike.
- KSS 40x4mm knife format - fits the CMT universal cutter head system and other insert shaper platforms accepting this knife size, giving you broad compatibility across machines.
- Sold as a matched pair (2 knives) - both knives in the set are ground to the same profile, ensuring balanced cutter head loading and a smooth, vibration-free cut.
- Part of a variety of profile knives for universal cutter heads - allows you to build a versatile library of profiles by mixing and matching within the CMT insert shaper system, expanding what a single cutter head can do.
Why This Product
- The 40x4mm KSS format is engineered for the CMT universal cutter head system, meaning these knives slot in without modification and are ready to run - no guesswork about compatibility.
- Alloyed steel construction means the cutting edge holds up through extended use on hardwood and dense sheet goods like MDF and chipboard, so you spend more time cutting and less time changing tooling.
- Purchasing knives as a matched pair ensures the cutter head stays balanced, which directly affects surface finish quality and reduces wear on your spindle moulder or shaper machine.
- Because CMT offers a variety of profiles in this same insert shaper system, a single cutter head body can be repurposed for many different molding shapes simply by swapping knife sets - a practical, cost-effective approach to profiling versatility.
Specifications
- Manufacturer Part Number: 690.039
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm
- Material: SP (alloyed steel)
- Quantity: 2 knives (sold as a pair)
- System: CMT Insert Shaper System - compatible with CMT universal cutter heads (692 series)
Approved Applications
- Molding and profiling on hardwood and softwood
- Cabinet door making
- Edge profiling
- Frame and panel work
- Shaping MDF and chipboard components
Frequently Asked Questions
What machines are these profile knives compatible with?
These 40x4mm KSS-format profile knives are designed for use with CMT universal cutter heads in the CMT Insert Shaper System (692 series cutter heads), as well as other insert shaper platforms that accept the 40mm knife format. Compatible machines include spindle moulders, moulders, and profile and edging machines.
How many knives come in the package?
The CMT 690.039 is sold as a pair - you receive 2 matched profile knives per package. Both knives carry the same 039 profile geometry, ensuring balanced loading in the cutter head.
What is the cutting height and thickness of these knives?
The cutting height is 1-37/64 in. and the maximum thickness is 5/32 in., corresponding to the standard 40x4mm KSS knife size used throughout the CMT insert shaper system.
What materials can these profile knives cut?
These alloyed steel shaper knives are suited for use on hardwood, softwood, MDF, and chipboard, making them a practical choice for a wide range of woodworking and millwork applications including cabinet door making, edge profiling, and frame and panel work.
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