Manufacturing Technology - I is a branch of mechanical engineering which involves transformation of raw materials from its original state to a finished product by changing its shape and few properties in a series of steps. Not all manufacturing processes can produce a product easily, economically and with good quality. Each process is generally categorised by some advantages and limitations over the other processes. This subject gives information about the different joining methods for metals, different plastic moulding techniques and sheet metal processes. It also includes different forming techniques and casting processes. Our hope is that this book, through its careful explanations of concepts, practical examples and figures bridges the gap between knowledge and proper application of that knowledge.