Lower Knife For Overlock Sewing Machine

A lower knife for an overlock machine is a key component in the cutting mechanism of the machine. Overlock machines, also known as sergers, are used to create professional and finished edges on fabric by trimming and encasing the fabric edge with thread simultaneously.

The lower knife of an overlock machine is located below the needle plate and works in conjunction with the upper knife. As the fabric is fed through the machine, the lower knife trims off the excess fabric along the edge, while the upper knife trims the fabric on the top side. This cutting action occurs just before the fabric is stitched and encased with thread.

The lower knife is typically made of durable, sharp steel and is adjustable in some overlock machines. The adjustment allows you to control the amount of fabric that is trimmed, which is useful when working with different fabric thicknesses or when needing to remove a specific amount of fabric for a particular edge finish.

It's important to keep the lower knife sharp and properly aligned for optimal cutting performance. Regular maintenance and occasional replacement may be required if the knife becomes dull or damaged.

If you are looking to purchase a replacement lower 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 lower knife for your machine model.