Hi Dee,
What is the name of the bobbin winder? If it is called SideWinder by WM Wrights. (www.wrights.com) you can purchase at JoAnns or Hancocks with a discount coupon and save.
I love mine. I'm using a much older backup machine (bought at Goodwill) will I save up to have my electronic machine repaired. The bobbin winder does not work on this Singer backup machine.
My little SideWinder runs on batteries and also electric. I'm planning using it even when I'm back to using my better machine.
If you have the very large cone of thread then you will need to get the larger SideWinder. Use a discount coupon if at all possible.
Pam M