You can order them from Amazon. Under the category Arts, craft, and sewing search for Griswold B111
This part is a six footer.
If you want more, you can order 25 feet.
UPDATE!!!
I finally figured out how to thread the machine. So the upper threading is done, the bobbin is in place, I took an old piece of denim and ran the wheel by hand.
Ten stitches per inch.
IT WORKED PERFECTLY!!
The stitch ain’t the straightest in the world, I will need to practice feeding the material in, but I am very, very happy!
Amazing. This machine is almost 75 years old.
They really knew how to build stuff back then!
I should get mine out and run it.
One word, and that is that those machines apparently work better on 100% cotton than poly blends.
Something about how they stitch. I noticed that when you use poly blends they tend to pucker and it’s got to do with that. The newer machines were designed to work with that kind of fabric.
Thanks for the info.