I got my first sewing machine at a yard sale, a 1916 Singer treadle machine. It didn’t work so well, but it was only $20. I carefully took it apart piece by piece, laying out each piece on the table in the order that it came off the machine. Then in reverse order, I cleaned each part carefully, oiled it, and put it all back together, cleaned up and refinished the cabinet, and nearly 30 years later, this is still my primary machine.
But there’s more. I’ve come across newer models, portables, machines without cabinets leading me to go searching for cabinets without machines, and more. It’s a fun hobby, and all but just a couple work beautifully. The ones that don’t work make interesting door stops.
These two are interesting to look at, but they froze up long ago and are now on honorable display.