Sewing for Beginners

Every sewing machine requires an upper thread and a bobbin thread.

The upper thread comes from the spool and is located on the outer side of the sewn fabric, see sketch (Quelle: Nählexikon Pattydoo - Oberfaden):

Both the upper and bobbin threads must be threaded correctly for sewing to be successful. The bobbin thread must be correctly wound before sewing. The correct thread tension must be set between the two threads, as this determines how tightly the upper and bobbin threads are joined together. If the thread tension is too high, small loops will form between the stitches of the upper thread. If the tension is too low, small loops will form between the stitches of the bobbin thread. If the thread tension is set correctly, the seam appearance is virtually identical on both sides. The thread tension can be adjusted using a small wheel on the sewing machine

The threading and winding of the threads and the setting of the thread tension depend on the machine - a look at the operating instructions (BEFORE use!) will help if anything is unclear.