How to wind a bobbin

First, unless you can wind your bobbin right in the bobbin case, you'll need to unthread your machine before you wind the bobbin.

Place the thread into the proper configuration for winding your bobbin. Usually, it's from the spool of thread around a tension post, to the bobbin itself.

Hand wind a small amount of thread onto the bobbin in the direction it will wind.

Place the bobbin on the bobbin winding post and snap the winder closed.

Slowly use the foot or knee pedal to begin the bobbin winding process. Don't wind too fast or you could break the thread.

When the bobbin is full, the winder will pop open. Your bobbin is full, so place it back into the bobbin case, rethread the machine and you're ready to sew.