Product Description
CMT Solid Carbide Insert Knives 12x12x1.5mm by CMT are precision-ground, reversible throwaway knives engineered for insert cutter head systems used in profiling, molding, and edging operations. Each knife measures 12mm in length by 12mm in height by 1.5mm in thickness and features four cutting edges ground at a 35 deg. angle, so when one edge dulls, you simply index to the next - extending usable life without resharpening. Manufactured from K1920 grade solid carbide, these insert knives deliver the hardness and wear resistance demanded by continuous production runs on hardwood, softwood, MDF, chipboard, and plywood. This listing includes 10 knives per pack.
Key Features
- K1920 Solid Carbide Material - a premium tungsten carbide grade that maintains a sharp cutting edge far longer than high-speed steel, reducing downtime and edge-change frequency on demanding materials.
- Four Reversible Cutting Edges at 35 deg. - each knife offers four usable edges, meaning you get four times the cutting life from a single knife before replacement is needed, improving cost efficiency per linear foot of material processed.
- 12x12x1.5mm Precision Dimensions - ground to exact tolerances so every knife seats consistently and repeatably in the cutter head, ensuring a uniform profile and smooth surface finish across every pass.
- Standard Indexable Knife Format - fits insert shaper cutter head systems that accept this standard reversible throwaway knife size, making tool changes fast and tool-free on spindle moulders and profile machines.
- 10-Knife Pack - having multiple knives on hand reduces machine downtime when edges are spent, keeping production moving without waiting on a reorder.
Why This Product
- Four cutting edges per knife means you are effectively getting four knives in one - ideal for shops that prioritize low tooling cost per unit of production without sacrificing cut quality.
- The reversible throwaway design eliminates the need for a separate knife-grinding setup; indexing to a fresh 35 deg. edge takes seconds, reducing tool change time and keeping the machine running.
- K1920 carbide grade is matched to the demands of both solid wood and engineered sheet materials like MDF and chipboard, giving the same knife versatility across a range of workpiece materials without swapping grades.
- Buying in a 10-pack ensures a ready supply of fresh edges on the shop floor, preventing the production interruption that comes from running out of replacement knives mid-run.
Specifications
- Manufacturer Part Number: 790.120.00
- Brand: CMT Orange Tools
- Total Length: 12mm
- Cutting Depth (Height): 12mm
- Thickness: 1.5mm
- Cutting Angle: 35 deg.
- Number of Cutting Edges: 4
- Material: K1920 Solid Carbide
- Knife Type: Standard Reversible Indexable Throwaway Knife
- Quantity: 10 per pack
Approved Applications
- Profiling and Molding
- Edge Profiling
- Rabbeting
- Grooving
- Jointing
- Compatible Materials - Hardwood, Softwood, MDF, Chipboard, Plywood
- Compatible Machines - Spindle Moulder, Profile Machine, Edging Machine, Router Table with Cutter Head
Frequently Asked Questions
How many cutting edges does each knife have, and how are they used?
Each knife has four cutting edges ground at a 35 deg. angle. When the active edge becomes dull, you rotate the knife in the cutter head to expose the next fresh edge. This indexing process can be repeated up to four times before the knife needs to be replaced, maximizing the value of each piece.
What does the K1920 carbide grade mean for cutting performance?
K1920 is a solid carbide grade - also described as HW-K1920 in the product designation - chosen for its hardness and wear resistance. It is well suited to cutting hardwood, softwood, MDF, chipboard, and plywood, holding a sharp edge through demanding production runs where high-speed steel would require more frequent edge changes.
What do the knife dimensions 12x12x1.5mm refer to?
Following the standard insert knife dimension convention, the values refer to L (total length) x H (cutting depth or height) x K (thickness). For this knife, that is 12mm length by 12mm cutting depth by 1.5mm thickness. Always verify these dimensions against your cutter head specifications before installing.
How many knives are included in one pack?
Each pack contains 10 solid carbide insert knives, all sharing the same 12x12x1.5mm dimensions and four-edge reversible design. Stocking a full pack ensures you have fresh edges available without interrupting production when an edge rotation cycle is complete.
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