Product Description
CMT Solid Carbide Reversible Knives - 20x12x1.5mm, 35 deg. Bevel, 2 Cutting Edges, 10-Pack by CMT are precision-ground throwaway insert knives engineered for demanding profiling, grooving, and molding work on spindle moulders and profile machines. Built from K1920 grade solid carbide (tungsten carbide), these indexable knives deliver the durability and edge retention needed for repetitive work in hardwood, softwood, MDF, chipboard, and plywood. Each pack includes 10 knives, giving you multiple ready-to-swap inserts to keep your cutter head running efficiently without extended downtime.
Key Features
- K1920 Solid Carbide Construction - Tungsten carbide material maintains a sharp, consistent cutting edge far longer than high-speed steel alternatives, reducing the frequency of tool changes during high-volume profiling and molding operations.
- 2 Cutting Edges at 35 deg. Bevel - Two reversible edges per knife mean you can rotate to a fresh edge when the first dulls, effectively doubling the usable life of each insert and lowering cost per cut.
- Standard Reversible (Indexable) Design - Throwaway knife format lets you swap or index knives quickly at the machine without grinding, keeping your workflow moving and your profiles consistent.
- Precise 20x12x1.5mm Dimensions - Ground to exact tolerances (20mm length x 12mm cutting depth x 1.5mm thickness), these knives seat accurately in compatible cutter head systems for repeatable profile quality cut after cut.
- 10-Knife Pack - Stocking 10 inserts at once means you have fresh cutting edges on hand for continuous production runs, minimizing interruptions on the shop floor.
Why This Product
- The solid carbide K1920 grade is well-suited for abrasive engineered materials like MDF and chipboard - materials that quickly degrade softer tool steels - making these knives a practical choice for shops that run a variety of wood-based panel products.
- The reversible two-edge configuration means a worn knife does not immediately become scrap; rotating to the second 35 deg. edge restores cutting performance instantly, delivering better value per insert compared to single-edge throwaway knives.
- At 20x12x1.5mm, this is a widely used standard size for insert cutter head systems on spindle moulders and profile machines, making these knives a direct-fit solution for common setups without modification.
- Buying in a 10-pack ensures you have an inventory of matched inserts, so all seats in a multi-knife cutter head can be loaded with identical, fresh blades for balanced cutting and uniform profile results.
Specifications
- Manufacturer Part Number: 790.200.00
- Brand: CMT Orange Tools
- Material: K1920 Solid Carbide
- Total Length: 20mm
- Cutting Depth: 12mm
- Thickness: 1.5mm
- Bevel Angle: 35 deg.
- Number of Cutting Edges: 2
- Knife Type: Standard reversible throwaway (indexable)
- Quantity: 10 per pack
Approved Applications
- Profiling and molding on spindle moulders
- Edge profiling on profile machines
- Rabbeting
- Grooving
- Jointing
- Insert cutter head operations on router tables
- Edging machine applications
Frequently Asked Questions
What does "reversible" or "indexable" mean for these knives?
Each knife has 2 cutting edges at a 35 deg. bevel. When the first edge becomes dull, you simply loosen the knife in the cutter head, flip or rotate it to expose the second fresh edge, and re-secure it. This is called indexing, and it restores full cutting performance without any grinding or resharpening - making it a true throwaway insert system.
What material are these knives made from, and why does it matter?
These knives are manufactured from K1920 grade solid carbide (tungsten carbide). Solid carbide holds a sharp edge significantly longer than high-speed steel, particularly when cutting abrasive materials like MDF, chipboard, and hardwood. This translates to fewer tool changes, more consistent profile quality over a longer production run, and lower overall tooling cost.
What are the exact knife dimensions, and what cutter head systems do they fit?
The knives measure 20mm in total length, 12mm in cutting depth, and 1.5mm in thickness - often written as 20x12x1.5mm. This is a standard reversible insert knife size used in compatible insert cutter head systems on spindle moulders, profile machines, edging machines, and router tables equipped with an appropriate cutter head. Always verify your specific cutter head's knife seat dimensions before installation.
How many knives are included, and can I use them across multiple cutter head seats?
Each pack contains 10 solid carbide knives. Having 10 matched inserts on hand means you can load all seats of a multi-knife cutter head with identical fresh blades simultaneously, which is important for balanced cutting and uniform profiling results. Spare knives can be kept in reserve for quick swaps during production without waiting on reorders.
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