The serger's knives are found in the section of the machine that cuts the material as it passes through the needle. As a result, the knives are able to match the overcast stitch, resulting in a totally encased edge.
Knives for your sewing machine should be of high quality and made for your particular machine. A neat, professionally-looking seam cannot be achieved with a knife that was not made for your machine, and it may cause damage or other problems. Sewing machine knives are like any other machine part; they wear out and need to be replaced eventually. Frayed or uneven fabric edges, difficulty in achieving a clean and professional-looking finish, and unusual noises or vibrations are all indicators that the sewing machine knife needs to be replaced. Changing the knife in a sewing machine is a simple task that can be done at home with simple equipment.
What are the Functions of Sewing Machine Knives?
Even before the stitches are made, the serger sewing machines' knives can trim the fabric! They contribute significantly to the tidy, polished appearance of your edges. The majority of serger manufacturers follow the same design principles. You should try it out on a couple of pieces of test fabric before using it for your first sewing job. Continue to modify the sewing machine knives' blade width. Do this until you've found a setting that gives you the look you want.