One of my favorite hobbies is working on antique pianos. In fact, I had a business rebuilding and refinishing pianos before I returned to teaching science. And, it's easy to see, I approach piano work from a scientific angle, taking pieces completely apart to find out how they work so I can improve them and bring them back to life.
The piano I am most eager to finish is a 1928 Pleyel. Here are some in-progress pictures (click on the images to see a larger picture):
I also am working on a double-keyboard Bechstein-Moor. Here is a photo before I started to take it apart:
I also enjoy working on vintage ham radios, clocks and watches.
Here are a few ham radio shots:
