Innen umlaufende Hinterschneidung

@inproceedings{Emmerichs1996InnenUH,
  title={Innen umlaufende Hinterschneidung},
  author={H. Emmerichs and Denise Giesler},
  year={1996}
}
Injection mouldings with encircling internal undercuts have to be demoulded in several stages.