Bernina Artista 640 Embroidery bobbin case
This may be a long shot but if anyone has a Bernina Artista 640 embroidery machine I have a question. Does your embroidery bobbin case have a spring in it? This is a 9mm machine and my embroidery wasn't keeping good tension. I took the bobbin case out to clean it and noticed it doesn't have a spring. I'm not sure if I lost it or if it never had a spring in the case at all. Any help anyone can provide with certainly be appreciated. Thanks in advance.