Thank you for allowing me to join. I am very unlikely to be able to add any thing of value to the forum as I have very little knowledge of engineering. I arrived here by accident after looking for information about the 'Minnie' traction engine. Some twenty years ago I bought the book, an Atlas lathe and began to chew metal. Made a few parts for my motorbike, nothing I couldn't have bought, but had some fun. Then I sold everything a bought a narrowboat. Still on the boat but still a hankering to build or rescue/salvage a part made project. Well that's a bit about me. SO I'll hide in the back ground and marvel at all the wonderful work that goes on.