Product Description
CMT 690.086 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 molding, profiling, and cabinet door applications. These insert shaper knives deliver consistent, repeatable profiles across hardwood, softwood, MDF, and chipboard, making them a reliable choice for woodworkers and production shops running spindle moulders or profile-and-edging machines. Sold as a pack of 2 knives, the 690.086 is part of CMT's broad range of profile knife options for the KSS 40x4mm insert shaper system.
Key Features
- Alloyed steel construction (SP material grade) - provides durability and long-lasting edge retention through repeated profiling passes on hardwood, softwood, MDF, and chipboard, reducing the frequency of knife replacement in production environments.
- 40x4mm knife size (1-37/64 in. x 5/32 in. cutting height and thickness) - matches the KSS 40x4mm insert shaper standard, ensuring accurate fit in compatible universal cutter heads without modification or shimming.
- Part of a wide variety of profile knife options - profile number 086 is one of many interchangeable knife profiles available for the CMT universal cutter head system, allowing woodworkers to swap profiles quickly and expand their molding capabilities without purchasing additional cutter bodies.
- Sold as a matched pair of 2 knives - balanced pairs are essential for safe, vibration-free operation in rotating cutter heads, helping maintain smooth surface finishes and accurate profile depth on every pass.
- Long-lasting performance - engineered for consistent output over extended use, supporting productive runs on moulding, edge profiling, frame-and-panel work, and cabinet door making without sacrificing profile quality.
Why This Product
- For shops running CMT 692 series universal cutter heads or other insert shaper systems accepting 40mm knives, these knives slot directly into an existing tool body - no new hardware required, just a profile swap to expand what your moulder can do.
- The alloyed steel SP material grade is selected for resilience across both hardwood and engineered sheet goods like MDF and chipboard, meaning a single pair of knives can serve multiple material types in a mixed-production workflow.
- Buying knives by profile number (086) rather than as part of a fixed-profile router bit means you invest only in the cutter body once and simply add profile knives as your job requirements grow - a cost-effective approach for professional woodworking shops.
- Matched pairs are pre-balanced for use in rotating cutter systems, which helps reduce vibration at the spindle and contributes to cleaner profile cuts and extended machine bearing life compared to mismatched or single-knife setups.
Specifications
- Manufacturer Part Number: 690.086
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Metric Size: 40x4mm
- Material: Alloyed Steel (SP)
- System: KSS Insert Shaper System - 40x4mm
- Quantity: 2 knives (1 pair)
Approved Applications
- Molding and profiling on spindle moulders and profile-and-edging machines
- Cabinet door making
- Edge profiling on hardwood and softwood workpieces
- Frame and panel work
- Profiling MDF and chipboard components
Frequently Asked Questions
What cutter head system are these knives compatible with?
These profile knives are designed for the KSS 40x4mm insert shaper system. They are compatible with CMT universal cutter heads (692 series) and other insert shaper cutter bodies that accept 40mm x 4mm knives. Always verify your cutter head's knife slot dimensions before installing.
How many knives come in a pack of 690.086?
The 690.086 is sold as a matched pair - 2 knives per pack. Cutter heads for insert shaper systems require balanced pairs of knives for safe rotation, so both knives should always be installed together.
What materials can these shaper knives cut?
These alloyed steel profile knives are suitable for use on hardwood, softwood, MDF, and chipboard. The SP-grade alloyed steel construction is chosen specifically for long-lasting performance across both solid wood species and engineered panel products.
Can I use these 690.086 knives with a 50mm cutter head?
The 690.086 knives are sized 40x4mm (1-37/64 in. x 5/32 in.). Whether they are compatible with a 50mm cutter head depends on that specific cutter head's knife slot design and knife acceptance size. Refer to your cutter head manufacturer's specifications to confirm compatibility before use.
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