In this paper we propose a model to handle redistribution for 3D user interfaces. Redistribution consists in changing the components distribution of an interactive system across different dimensions such as platform, display and user. Our work is based on previous models that ease the creation of 3D plastic user interfaces, interactive systems that can handle context of use modifications while preserving usability. We extended these models in order to include redistribution capabilities. The final solution lets developers create applications where 3D content and interaction tasks can be automatically redistributed across the different dimensions at runtime. The proposed redistribution process includes an automatic detection of these platforms and a meta-user interface to control the redistribution granularity. In order to illustrate this model, we describe three different scenarios of redistribution between a tablet and a CAVE for a 3D application. We show how redistribution can be used at runtime to combine these platforms, to switch seamlessly from one platform to another one and last how redistribution can be used to create a collaborative context of use.