Not all sewing machines are the same. The majority, but not all, sewing machines have you remove the bobbin from the bobbin case to wind the bobbin.
Most older sewing machines will have you loosen a part of the hand wheel which will disengage the sewing part of the machine, to wind a bobbin.
There is always a threading pattern to lead the thread from the spool to the bobbin that will ensure the tension on the thread for the bobbin to be wound smoothly, if path is followed correctly.
There is always some form of a brake on the bobbin winding area, that will stop the bobbin from over winding.
Parts of a Bobbin Winder:
- The thread starts on the thread spool holder.
- Thread guides are a vital part of the bobbin winding process to maintain tension on the thread and achieve an evenly wound bobbin.
- The bobbin holder is movable in most machines. The bobbin must be placed all the way into place on the bobbin holder. The bobbin holder is away from the brake when the bobbin is being put on and taken off of the holder. It slides towards the brake for the bobbin winding process.
- The brake stops the bobbin or changes the sound of the machine so you know when the bobbin is full. It is not advisable to over fill a bobbin.


