I was only ten years old when I took a watch to pieces (naturally, I could not put it back together). A few years later I managed to put watched together, though now, looking back, I can see that it was a kind of rough work. The, I forgot about watches for decades. I trained to be a locksmith and worked as one for five years. My years of practice and education in the skill still these days provide base on how to touch various tools and work on various material.