DIY. A fully illustrated step-by-step guide with 100 sketches and technical drawings, this book also contains a comprehensive range of data which is required in the metal working workshop, and by those designing a wide range of engineered items, tools and machines. It provides in a single concise volume data that is only otherwise available by reference to many different sources or more expensive publications. For those involved in restoration work, the book also includes details of items not now used, and for which data is not easy to locate. It contains information on: Drills, Turning tools, End mills, Grinding wheels, Collets and tapers, Precision, Spanners, Thread sizes, Thread forms, Screw cutting, Worm cutting, Gears, Belt drives, Dividing, Press work, Welding, Maths formula, Dovetails and T slots, Electrical components, Conversion charts and more.