Tool engineering is the domain from which all manufacturing originated. Moulds, jigs, fixtures, plastics, die casting, and dies are involved in this manufacturing. On the other hand, mechanical engineering consists of other engineering spheres like electrical engineering, electronics engineering, computer science engineering, control engineering, and mechanical engineering. Mechanical engineers design, develop and build tools, engines and machines. A tool engineer uses CAD to create tools for vehicles, aeroplanes, and heavy machinery. Tool engineer drafts blueprints for producing a product according to its specifications.