Here's something to relieve the work-at-home boredom: my example of the model Fanning hot air engine. It was built nearly 20 years ago by a friend who never got it running. I rebuilt it last year with a new displacer, burner, and firebox. I also painted it and added the plumbing, oilers, and nameplate. These were made from casting kits offered by the late Paul Jacobs in the early 2000s and apparently purchased by only a few model builders.