How to Replace a Utility Knife Blade?

Noticed your utility knife blade getting shorter or duller? Many people instinctively think it's time to buy a new utility knife—but that's usually unnecessary. As long as you know how to correctly replace the blade, you can restore the sharpness of your tool and extend its service life. Below, based on the experience of a professional utility knife factory, we'll walk you through the steps for replacing a utility knife blade with ease.

Remove the Rear Lock of the Utility Knife

First, prepare your utility knife. High-quality utility knives from Deli Tools are designed with user-friendly features that make blade replacement simple. Locate the locking cap at the rear end of the utility knife and pull it out firmly. This cap secures the blade slider, so handle it with care to avoid damage during removal.

Remove the Blade and Slider

Next, slide out the blade and its attached slider from the knife casing. The blade and slider are usually connected and cannot be removed separately. Hold them at a 90-degree angle, then lift the blade upward to remove it smoothly. Although this step seems simple, it requires the right angle and force to avoid breaking the blade or damaging the slider.

Choose the Right Replacement Blade

When replacing the blade, be sure to purchase matching blades from a reputable utility knife factory or authorized distributor. Deli Tools blades are precisely manufactured and highly reliable. Make sure the replacement blade has the same width as the original one. A mismatched blade may not fit properly, leading to instability during use or potential safety hazards.

Install the New Blade and Secure It

Once you have the correct new blade, follow the disassembly steps in reverse. Attach the blade to the slider, keep it at a 90-degree angle, and slide it back into the knife casing. Finally, don't forget to replace and securely fasten the rear lock. This step is crucial—if the lock is loose, the blade slider could slip during use, creating a safety risk.

By following these steps, you can easily replace your utility knife blade without needing to buy a new knife. It's cost-effective, eco-friendly, and practical. As a professional utility knife factory, Deli Tools is committed to providing high-quality, durable utility knives and matching blades to ensure users work safely and efficiently. Blade replacement is not complicated—as long as you choose the right components and understand the correct method. By sourcing blades from a trusted utility knife factory, you ensure proper fit and quality assurance. So, next time your blade gets short or dull, don't rush to replace the whole knife—try replacing the blade instead. It'll save you money and hassle.