Tool mechanics manufacture punching tools, casting and injection molds or devices for industrial series production and mechanical engineering. They usually use CNC-controlled machine tools for production, which they also program themselves. They use lathes, milling, grinding and drilling machines to produce the individual parts of the often complex tools. In doing so, they adhere exactly to the dimensions specified in technical drawings. They assemble individual parts into finished tools and install them in the production machines, e.g. in punching machines. They carry out test runs and check the finished products. The maintenance and servicing of tools and machines is also part of the job.