Snapping together of nodes does not apply to points given via the “Pt”-input-plug. This can be used for defining zero length springs – think e.g. of the bolt which connects the two pieces of a scissor mechanism. In such a case one can provide duplicate points via the “Pt”-input. Elements, which connect to these points do so in alternating fashion: the first element in the model connects to the first duplicate node, the elements after that to the second, and so on. The actual connection between the elements can be made via a spring with zero length as shown in fig. 184.108.40.206. The local axes of zero length spring elements correspond by default to the global coordinate system. In order to define zero length elements provide duplicate points at the “Pt”-input of the “Assemble”- and “LineToBeam”-component. Elements attach to these nodes in alternating fashion.