Product Description
CMT Solid Carbide Knives (4/35 deg.) 39.5x12x1.5mm - 10-Pack by CMT are precision-ground, reversible indexable insert knives engineered for demanding profiling, molding, and grooving operations. Built from K1920 grade solid carbide (tungsten carbide), these HW-F1730 standard replaceable knives deliver four usable cutting edges per insert at a 35 deg. bevel angle, extending tool life and reducing per-edge cost on hardwood, softwood, MDF, chipboard, and plywood. Measuring 39.5mm in length, 12mm in height, and 1.5mm in thickness, each knife fits compatible insert cutter head systems used on spindle moulders, profile machines, edging machines, and router tables equipped with a cutter head.
Key Features
- K1920 solid carbide construction - tungsten carbide material resists wear and heat buildup, supporting longer service intervals across hardwood, softwood, MDF, and chipboard applications compared to standard high-speed steel alternatives.
- Four cutting edges per knife (35 deg. bevel) - rotate to a fresh edge each time one dulls, multiplying the usable life of each insert and reducing downtime for knife changes.
- Reversible indexable design (HW-F1730 standard format) - conforms to the HW-F1730 replaceable knife standard, making these inserts compatible with a wide range of insert-style cutter head systems for versatile machine compatibility.
- Precision-ground dimensions (39.5 x 12 x 1.5mm) - exact tolerances on length, height, and thickness ensure consistent profile quality and a secure, repeatable fit in compatible cutter heads with every index.
- 10-piece pack format - provides a ready supply of replacement inserts, minimizing production interruptions on high-volume profiling and molding runs.
- 1.5mm knife thickness (K specification) - the precise seat thickness maintains accurate depth-of-cut registration in the cutter head pocket, supporting clean, repeatable profiles on every pass.
Why This Product
- Four cutting edges per insert mean you get four times the use from a single knife before replacement is needed - a direct cost advantage for shops running continuous profiling or molding work on hardwood and engineered sheet goods.
- The K1920 solid carbide material grade is suited to abrasive workpieces like MDF and chipboard, where softer tooling dulls rapidly - making these inserts a practical choice for mixed-material production environments.
- Conforming to the HW-F1730 standard replaceable knife format, these inserts fit compatible cutter head systems across spindle moulders, profile machines, edging machines, and router table setups, reducing the number of knife SKUs a shop needs to stock.
- The 10-piece pack quantity keeps a practical buffer of spare inserts on hand, so a worn edge never becomes an unplanned production stop during rabbeting, grooving, jointing, or edge profiling operations.
Specifications
- Manufacturer Part Number: 790.395.12
- Brand: CMT Orange Tools
- Description: SOLID CARBIDE KNIVES (4/35 deg.) 39.5x12x1.5mm HW-F1730
- Bevel Angle: 35 deg.
- Number of Cutting Edges: 4
- Total Length: 39.5mm
- Cutting Depth: 12mm
- Cutting Height: 12mm
- Teeth Thickness: 1.5mm
- Material: K1920 solid carbide
- Knife Standard: HW-F1730
- Quantity: 10 per pack
Approved Applications
- Profiling and molding
- Edge profiling
- Rabbeting
- Grooving
- Jointing
Frequently Asked Questions
How many cutting edges does each knife provide, and how does the reversible design work?
Each CMT 790.395.12 insert knife provides 4 cutting edges ground at a 35 deg. bevel angle. When one edge dulls during profiling or molding, you simply index the knife to expose a fresh edge - no regrinding required. Once all four edges are used, the knife is replaced. The 10-piece pack format ensures you have replacement inserts readily available.
What materials can these solid carbide knives cut effectively?
The K1920 grade solid carbide (tungsten carbide) construction makes these knives well suited for cutting hardwood, softwood, MDF, chipboard, and plywood. Solid carbide is especially effective on abrasive engineered materials like MDF and chipboard, where it maintains a sharper edge longer than softer tooling materials.
What cutter head systems are these knives compatible with?
These knives conform to the HW-F1730 standard replaceable knife format at 39.5 x 12 x 1.5mm dimensions with a 35 deg. bevel. They are designed for use in compatible insert-style cutter head systems, including those used on spindle moulders, profile machines, edging machines, and router tables fitted with a compatible cutter head. Always verify your cutter head accepts the HW-F1730 standard and the 39.5 x 12 x 1.5mm knife size before installing.
What do the dimensions 39.5 x 12 x 1.5mm refer to?
The three dimensions correspond to the knife's total length (L) of 39.5mm, cutting height (H) of 12mm, and teeth thickness (K) of 1.5mm. These measurements determine how the knife seats and registers in the cutter head pocket, and all three must match your cutter head's insert specifications for proper fit and safe operation.
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