Collapsible Core
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Collapsible Animation

   

Collapsible Core molds provide a method to produce under cut 'Lips or Threads" in an injection molded part. 

    Standard collapsible cores can be purchased with altering of the portion that forms a portion of the part.  If  a standard collapsible core will not work in a particular design it is usually possible to design one to meet the design requirement.

Animation of an Internal  Collapsible Core

Roehr Tool Applications
    Animation Collapsible Core
    Expandable Cavity A-Side
    Expandable Core B Side
    Minicore