I don't really have a reply but a question. I bought a serger (used) and like I've heard other mention didn't use it right away. Well I finally got it out the week to play because I was thinking of doing a flannel gown and thought it would prevent raveling. However, just with the playing scrap/test piece I serged together I didn't like how the thread showed when the seam was flattened out. Can anything be done. My serger only has 3 thread which means it only has one needle. I too should of done more homework before buying it even from a friend. :?