High volume production of micro parts from metals or plastics requires appropriate replication processes like micro metal forming or micro injection molding. Regardless which replication process is applied micro molds and their manufacture -very often made from hardened tool steels - are crucial for an economic success. Here precision milling has shown its great potential and examples for the mold making as well as replication are given. Nevertheless, the decisive measure for parts' quality are often their mechanical properties and testing of micro parts shows specific challenges.
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