Part 3/11:
The speaker reveals his hands-on hobbies, such as drilling, milling, and restoring vintage equipment, which often leave his knees dirty. He describes ongoing projects, including rebuilding and repairing old devices. His interest intriguingly extends to sophisticated topics like the extensive restoration of the "RD" (possibly a specific machine or vehicle), and he mentions learning from experts like Bob Greener, a scientist whose insights into materials and structural phenomena captivate him.