Upper Knife For Overlock Sewing Machine

The upper knife is another important component of an overlock machine, working in conjunction with the lower knife to trim fabric edges and create neat, finished seams.

In an overlock machine, the upper knife is positioned above the fabric, opposite the lower knife. As the fabric is fed through the machine, the upper knife trims the excess fabric along the edge simultaneously with the lower knife.

The upper knife is typically made of durable, sharp steel and is also adjustable in many overlock machines. Adjusting the position of the upper knife allows you to control the amount of fabric that is trimmed, which can be helpful when working with different fabric thicknesses or when desiring specific edge finishes.

Just like the lower knife, it's important to keep the upper knife sharp and properly aligned for optimal cutting performance. Regular maintenance and occasional replacement may be necessary if the knife becomes dull or damaged.

If you are looking to purchase a replacement upper knife for your specific overlock machine, I recommend referring to the machine's manual or contacting the manufacturer or a sewing machine dealer. They can provide you with the correct part number or guide you in finding the appropriate upper knife for your machine model.