Freud C320 4" L High Speed Steel Industrial Planer and Jointer Knives are built for professional shops that demand consistent, expert-level results. Specifically designed to fit the Freud/Diablo C320 platform, these 4" blades deliver reliable performance, right out of the box.

Premium High Speed Steel stock provides superior edge retention and heat resistance under demanding planing and jointing tasks. Each knife arrives pre-ground to a razor-sharp edge, so you get a super smooth cut with minimal break-in time. Say goodbye to initial chatter and uneven surfaces—the edge is ready for precise, uniform results from the first pass.

Why these knives stand out

• Exacting geometry designed to produce flat, true boards and clean edges on both hardwoods and softwoods.
• Longer service life than standard carbon-steel alternatives, reducing downtime for sharpening and knife changes in busy production environments.
• Consistent performance across multiple passes, maintaining thickness and surface quality for cabinetry, furniture components, and panel assemblies.
• Machine-specific fit engineered to align with the C320 4" knife insert carriers, ensuring secure seating and predictable results.

Ideal use cases

• Resurfacing hardwoods like maple, oak, and walnut for furniture components, doors, and trim with a refined, blemish-free finish.
• Flattening and smoothing plywood or veneered panels where edge clarity and glue-line integrity matter.
• Preparing MDF or particleboard edges for paint-ready surfaces with minimized chipping and fuzz.

Installation and care tips

• Confirm correct orientation and secure seating in the knife carrier to achieve optimal cut quality.
• When performance declines, rotate or re-sharpen as needed to maintain a consistent finish and board thickness.
• Store blades in a dry environment and handle with care to preserve the razor edge between jobs.

For professional workshops that demand precision, durability, and immediate usability, Freud C320 4" L High Speed Steel Industrial Planer and Jointer Knives deliver a dependable, high-performance solution. They’re the practical upgrade you need to keep production moving and finishes flawless.