Brochu, TysonSchmidt, RyanAdrien Peytavie and Carles Bosch2017-04-222017-04-2220171017-4656https://doi.org/10.2312/egsh.20171011https://diglib.eg.org:443/handle/10.2312/egsh20171011We introduce a set of tools for interactive modeling of multi-material objects. We use non-manifold surface meshes to define complex objects, which can have multiple connected solid regions of different materials. Our suite of tools can create and edit non-manifold surfaces, while maintaining a consistent labeling of distinct regions. We also introduce a technique for generating approximate material gradients, using a set of thin layers with varying material properties. We demonstrate our approaches by printing physical objects with a multi-material printer.I.3.5 [Computer Graphics]ModelingModeling Interfaces10.2312/egsh.2017101145-48