A method is provided for securing a thermoplastic insert between first and second skin sheets of a sandwich panel using an installation tool to rotate the insert about a central axis. One of the installation tool and insert are provided with a male connection feature and the other is provided with a...http://www.google.com/patents/US6153035?utm_source=gb-gplus-sharePatent US6153035 - Method and apparatus for securing a thermoplastic insert within a sandwich panel
