The traditional hard mold steel mold is more suitable for large-scale products. The steel mold methods include EDM, sand casting, die casting and ceramic precision casting.
The EDM method is to use the RPM prototype to make the EDM electrode, and then use the EDM to make the steel mold. The production process is generally: RP prototype → three-dimensional grinding wheel → graphite electrode → steel mold.
Quickly make electrode mold as shown in the figure: