Consulting with engineers and other professionals to understand the functionality and structure of mechanical devices or systems Preparing detailed working diagrams of machinery and mechanical devices, using measurements, specifications, and other data from engineers Using Computer-Aided Design and Drafting (CADD) software to create technical drawings and models Adding structural details to architectural plans from their knowledge of building techniques Specifying dimensions, materials, and procedures for new products Working with manufacturers and builders to ensure technical designs are feasible and can be implemented correctly