So, I've been really pleased with my Singer 15-91. It is a beast of a machine that, despite being 50+ years old, works great and powers through just about anything.
Went to see my parents today. I remembered that my wife's grandmother had an old machine and that we had stuffed it in the back corner of my parent's attic 3 moves ago. Sure enough, it was still up there. A Singer 503 Special.
The stand/cabinet it is in is looking REALLY rough, but I oiled the machine and just sewed a new blackbishop bag for one of my DIY hammocks. The thing works really well. Now I have the ability to do more than just a simple straight stitch.
It is missing all of the extra attachments, but I think the ones that I care about are interchangeable with my 15-91.
My wife just rolled her eyes she learned that I had picked up her grandmother's machine. I figured my best shot of finding someone that might understand my excitement was here in the HF DIY area.