Carpentry spare part that restores smooth planing performance after wear. Keep work flowing by having a trusted replacement on hand, with Spear & Jackson CSP4 Smoothing Plane Blade. Will a straightforward spare blade make a noticeable difference on site?
⚡ At a Glance
- • Cutting Quality: Clean, consistent shavings with a fine surface finish
- • Best for: Woodworkers and DIYers replacing a No.4 smoothing plane blade
- • Not ideal for: Users needing blades for bench planes of other sizes
Ground and hardened carbon steel construction gives a durable cutting edge. Supplied as a spare or replacement to fit the CSP4 No.4 smoothing plane, with variants available for other Carpenter's Planes.
Long-lasting sharpness - with ground and hardened carbon steel
Ground and hardened carbon steel produces a hard edge that resists rapid dulling and accepts a keen bevel when sharpened. The hardened surface helps maintain geometry during normal use.
Harder steel holds a working edge for longer, reducing the need for frequent regrinding. Expect more consistent planed surfaces between sharpenings.
Direct compatibility - with CSP4 No.4 smoothing plane
Manufactured specifically to fit the CSP4 No.4 smoothing plane, allowing direct replacement without modification. Variants exist to match other Carpenter's Planes if a different fit is required.
Quick swap-in replacement gets a worn plane back to work with minimal fuss. Keeping a spare means less downtime on site or in the workshop.
Ready for fine-tuning - with a ground finish that aids setup
A ground finish produces true faces and bevels that simplify accurate sharpening and setup. That geometry helps achieve a stable cutting angle when the blade is bedded and adjusted.
After a brief sharpening and correct setup, the blade delivers clean, professional results. Favoured by users who fine-tune blades to suit their working style.
✨ The 4 Key Reasons for Spear & Jackson CSP4 Smoothing Plane Blade
- Ground and hardened steel, Retains a keen edge between routine resharpenings for longer use
- Designed for CSP4 fit, Swaps into No.4 plane without modification for quick replacement
- Ready to sharpen, Ground finish makes achieving a crisp bevel straightforward and consistent
- Spare availability, Keeps downtime and site delays to a minimum when blade failure occurs
📋 Technical Details at a Glance
- Category: Lawn & Patio
- Brand: Spear & Jackson
- Material: Ground and hardened carbon steel
- Fits: CSP4 No.4 smoothing plane
- Intended use: Replacement blade for smoothing/finishing planing
❓ Frequently Asked Questions
Q: Is this blade compatible with the CSP4 No.4 smoothing plane?
A: Yes, it is a spare blade specifically made to fit the CSP4 No.4 smoothing plane.
Q: What material is the blade made from?
A: The blade is made from ground and hardened carbon steel, as stated in the product description.
Q: Will the blade hold a sharp edge and what about sharpening?
A: User feedback reports hard steel that holds its edge and that the blade performs well after sharpening and setup.
🏆 Our Verdict
Suitable for carpenters and hobby woodworkers who rely on a No.4 smoothing plane and need a dependable replacement blade. Ground and hardened carbon steel combined with direct CSP4 compatibility restores planing performance quickly. Keeping a spare blade on hand delivers clear long-term value by reducing downtime and extending the useful life of the plane.
