Sewing Machine Bobbin Case:
- The sewing machine bobbin case may be removable from the sewing machine or it may be built in to the sewing machine.
- Bobbin cases are not interchangeable in different sewing machines.
- All bobbin cases have a threading pattern. The best place to learn how to thread your bobbin case is your sewing machine manual.
- A bobbin is placed into a removable bobbin case so the thread and the slot form an upside-down "V".