diameter and surface finishes to Ra 0.2. Unlike grinding, contour shapes program into the EDM controller, eliminating contoured wheels and shortening setup time. Applications include core and ejector pins for micromolds, miniature valve slides, electrodes for sink EDM, and micropump parts.

Hirschmann Engineering USA Inc., 1588 Barclay Blvd., Buffalo, IL 60089, (847) 419-9890, www.hirschmannusa.com