It would be fascinating to watch some of these Tradesmen at work. I once got the chance to watch an engraver who had done his time at some top gun houses in London engrave a motorcycle case for a friend. After sketching the design with a pencil he got stuck in and I was amazed at how fast he was. Watching a Tinsmith at work is similar. My very best efforts, the results of much labour would be laughed at.