Why is my sewing machine only doing a straight stitch?
If the upper thread appears as a single line, the lower thread is incorrectly threaded. Instead of the appropriate tension being applied to the lower thread, it is pulled through the fabric when the upper thread is pulled up.
What does computerized sewing machine mean?
Computerized sewing machines feature small monitor displays for easier operation. A computer is used to control several different motors, giving you the ability to precisely move the needle bar, the tensioning discs, the feed dog, and other sewing machine parts.
What is the advantage of a computerized sewing machine?
Computerised sewing machines
More control – A computerised machine has much better speed control, and you can also choose to have no foot control at all. Versatile – Whether you are sewing very delicate fabric, or thick layers – a computerised machine copes well with variation and has accurate tension control.
What is a lockstitch on a sewing machine?
: a sewing machine stitch formed by the looping together of two threads one on each side of the material being sewn.
What is lockstitch vs straight stitch?
When – You will use a lock stitch anytime you sew up a quilt, or make an item of clothing. A straight stitch is most often used when sewing woven fabric together. Zigzag or stretch stitches are most often used when sewing knits.