Fabrication‐aware Design with Intersecting Planar Pieces

Abstract

Figure 1: 3D designs composed of planar intersecting pieces fabricated using laser cutting and CNC milling. AbstractWe propose a computational design approach to generate 3D models composed of interlocking planar pieces. We show how intricate 3D forms can be created by sliding the pieces into each other along straight slits, leading to a simple construction that does not require glue, screws, or other means of support. To facilitate the design process, we present an abstraction model that formalizes the main geometric constraints imposed by fabrication and assembly, and incorporates conditions on the rigidity of the resulting structure. We show that the tight coupling of constraints makes manual design highly nontrivial and introduce an optimization method to automate constraint satisfaction based on an analysis of the constraint relation graph. This algorithm ensures that the planar parts can be fabricated and assembled. We demonstrate the versatility of our approach by creating 3D toy models, an architectural design study, and several examples of functional furniture.

BIM methodology in Building Engineering degree: workshop in Graphical Expression of Technologies subject = Metodología BIM en el grado de edificación: modelo de taller en la asignatura Expresión Gráfica de Tecnologías

“…En una fase posterior, debe materializar lo construido virtualmente empleando técnicas de impresión 3D. Habría que matizar que un proceso de fabricación lleva implícito otros factores importantes asociados a las propiedades físicas de los materiales empleados en la maqueta impresa y a la técnica de carpinterías [11], mejorando de este modo los resultados finales en calidad y colores diferenciados para el ensamblaje final (Fig. 9), siguiendo diferentes métodos [12], [13].…”

Elastic textures for additive fabrication

“…Several techniques have been proposed to design paper craft objects [Mitani and Suzuki 2004], plush objects [Mori and Igarashi 2007], and objects made of interlocking planar slices [Cignoni et al 2014;Schwartzburg and Pauly 2013;Hildebrand et al 2012]. Other techniques use geometric techniques to change surface appearance by synthesizing surface microgeometry [Weyrich et al 2009] or changing the shape to generate custom target caustics [Schwartzburg et al 2014].…”

Boxelization

“…Fabrication in-parts create tangible, physical artifacts either by using shape proxies such as planar boundary pieces [Chen et al 2013] or planar slices [Schwartzburg and Pauly 2013;Hildebrand et al 2012;McCrae et al 2011], or by segmenting the object to pieces for assembly [Luo et al 2012;Lau et al 2011]. In all these works, the object is cut into disjoint parts and reassembled, while our work searches for a single foldable object.…”

“…Our work presents a method to create a fabricated 3D object that can physically fold between the input 3D shape and a box. Unlike previous works in computer-assisted fabrication that create disjoint pieces [McCrae et al 2011;Luo et al 2012;Hildebrand et al 2012;Schwartzburg and Pauly 2013;Chen et al 2013], our method produces a single, connected object that can be folded. Along with the visual appeal and functional advantages of stacking and transporting, our technique allows for reduced printing times and cost, due to the compactness and regularity of the shape.…”