Istituto di Scienza e Tecnologie dell'Informazione     
Malomo L., Pietroni N., Bickel B., Cignoni P. FlexMolds: automatic design of flexible shells for molding. In: ACM Transactions on Graphics, vol. 35 (6) article n. 223. sPECIAL ISSUE: Proceedings of ACM SIGGRAPH Asia 2016. ACM, 2016. [Online First 11 November 2016]
We present FlexMolds, a novel computational approach to automatically design flexible, reusable molds that, once 3D printed, allow us to physically fabricate, by means of liquid casting, multiple copies of complex shapes with rich surface details and complex topology. The approach to design such flexible molds is based on a greedy bottom-up search of possible cuts over an object, evaluating for each possible cut the feasibility of the resulting mold. We use a dynamic simulation approach to evaluate candidate molds, providing a heuristic to generate forces that are able to open, detach, and remove a complex mold from the object it surrounds. We have tested the approach with a number of objects with nontrivial shapes and topologies.
URL: http://dl.acm.org/citation.cfm?id=2982397
DOI: 10.1145/2980179.2982397
Subject Digital fabrication
Shape modeling
I. Computing methodologies

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