Now each machine is different on how to wind a bobbin but the general concept is basically the same. I encourage students to refer to their sewing machine manuals but this tutorial will also help you in winding bobbins by remembering what you learned in class. So let's get started!
First, go ahead and put your spool of thread on your machine. Next, look for the diagrams on the top of your machine that help guide you with winding the bobbin. In the below picture, the dashed lined diagram is the one for winding the bobbin (it is like that on many machines).
This is how it looks...same as in the diagram!
Take the end of your thread and from the inside out of your bobbin, put the thread through one of the holes.
Place your bobbin on the bobbin winder located in the top right hand corner of your machine. You may hear a snap as it goes down into place.
Push the bobbin, and the holder, over to the right. This will engage the spinning motion of the bobbin and disengage the needle from moving while you wind your bobbin. (NOTE: If you have an older or a non-computerized machine, you may have to make an adjustment on your handwheel to stop the needle from moving while you wind your bobbin. Consult your sewing machine manual).
Holding the tail of thread that you put through the hold in your bobbin, go ahead and press on your foot pedal. Hold the thread tail until the bobbin has thread covering its center core (if you let go too soon, the thread may unwind).
Take your foot off the pedal and stop. Cut your thread tail off and then continue winding your bobbin.
The little plastic or metal piece to the right of the bobbin will tell the machine when your bobbin is full. When the bobbin is full, the motor will continue to run but the spinning will stop. At that point, take your foot off the pedal, push your bobbin and the holder back to the left (starting position) and then take the bobbin off the winder. Cut your thread and you are now ready to thread your machine!
Here is a tutorial to help you thread your sewing machine!