Cheap thread will break easily, as will screwed up tension. If you can't figure out what's wrong, rethread the machine (check the owners manual), put in a new needle, play with the upper tension, and if that doesn't work, call the dealer you purchased the machine from....or a friend who has experience with sewing machines!
New sewing machines are fun, but they can take awhile to figure out. I bought a new Bernina last year, and there are still some things I haven't figured out!
|