Metamolds

Alderighi, Thomas; Malomo, Luigi; Giorgi, Daniela; Pietroni, Nico; Bickel, Bernd; Cignoni, Paolo

doi:10.1145/3197517.3201381

Cited by 28 publications

(15 citation statements)

References 34 publications

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“…Whether filament-, resin-, or powder-based-3D-printed materials are still far away from the level of quality offered by natural or synthetic polymers. This also explains the increasing attention on techniques for silicone molding [51], [52], [53], which help relax restrictions on the shape that can be fabricated by traditional molding. However, it cannot replace additive manufacturing.…”

Section: Related Workmentioning

confidence: 94%

Strong 3D Printing by TPMS Injection

Yan

Rao

Lü

et al. 2020

IEEE Trans. Visual. Comput. Graphics

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3D printed objects are rapidly becoming prevalent in science, technology and daily life. An important question is how to obtain strong and durable 3D models using standard printing techniques. This question is often translated to computing smartly designed interior structures that provide strong support and yield resistant 3D models. In this paper we suggest a combination between 3D printing and material injection to achieve strong 3D printed objects. We utilize triply periodic minimal surfaces (TPMS) to define novel interior support structures. TPMS are closed form and can be computed in a simple and straightforward manner. Since TPMS are smooth and connected, we utilize them to define channels that adequately distribute injected materials in the shape interior. To account for weak regions, TPMS channels are locally optimized according to the shape stress field. After the object is printed, we simply inject the TPMS channels with materials that solidify and yield a strong inner structure that supports the shape. Our method allows injecting a wide range of materials in an object interior in a fast and easy manner. Results demonstrate the efficiency of strong printing by combining 3D printing and injection together.

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Section: Related Workmentioning

confidence: 94%

Strong 3D Printing by TPMS Injection

Yan

Rao

Lü

et al. 2020

IEEE Trans. Visual. Comput. Graphics

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“…After partitioning the structure, we further regularize the boundaries between the partitions by performing multi-class classification; this process of seeking smooth boundaries ensures easy assembly. This problem has been previously addressed by Wang et al [WZK16] and Alderighi et al [AMG*18]. We follow [WZK16] and use an SVM [CV95] classifier to determine our cut plane.…”

Section: Object Partitionmentioning

confidence: 99%

ZomeFab: Cost‐Effective Hybrid Fabrication with Zometools

Shen

Chen

Huang

et al. 2019

Computer Graphics Forum

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In recent years, personalized fabrication has received considerable attention because of the widespread use of consumer‐level three‐dimensional (3D) printers. However, such 3D printers have drawbacks, such as long production time and limited output size, which hinder large‐scale rapid‐prototyping. In this paper, for the time‐ and cost‐effective fabrication of large‐scale objects, we propose a hybrid 3D fabrication method that combines 3D printing and the Zometool construction set, which is a compact, sturdy and reusable structure for infill fabrication. The proposed method significantly reduces fabrication cost and time by printing only thin 3D outer shells. In addition, we design an optimization framework to generate both a Zometol structure and printed surface partitions by optimizing several criteria, including printability, material cost and Zometool structure complexity. Moreover, we demonstrate the effectiveness of the proposed method by fabricating various large‐scale 3D models.

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“…Some research has been done around molding custom objects. MetaMold [1] is a software tool that generates the most ideal mold for an object. This increases the amount of usable materials significantly but comes at the cost of a slower fabrication time compared to a 3D printer because the mold also needs to be printed.…”

Section: Moldingmentioning

confidence: 99%

“…The basic approach is to form a mold, which is the negative of the desired object; to cast liquid materials in the mold, such as silicones, resins, or plaster; solidify the material via heat, air, or chemical reaction; and remove the mold, leaving the final object. Thus far, the digital fabrication of mold negatives has relied on 3D printing [1,15], which can be slow, and restricts the end result to a single material and color. Our approach, StackMolds, produces mold negatives by laser-cutting a sliced version of the mold (Figure 1.4c-d).…”

Section: Our Approachmentioning

confidence: 99%

“…MetaMold [1], on the other hand, presents a similar technique but first generates a solid 3D printable meta-mold to produce the actual flexible mold through an additional silicone casting step. The resulting mold will exist out of two pieces and is optimized to prevent any form of stress on the casted object when it needs to be removed.…”

Section: Computational Molding Processesmentioning

confidence: 99%

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StackMold: Rapid Prototyping of Functional Multi-Material Objects with Selective Levels of Surface Details

Valkeneers

Leen

Ashbrook

et al. 2019

Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology

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An enormous thanks to Prof. Dr. Raf RAMAKERS for all his input and support in making this project happen. He provided me with very fast feedback on the work I did, helped with innovative ideas to solve problems and provided me with all the materials and tools that I required. Providing materials and tools is often taken for granted as the duty of the supervisor, but he was proactive in asking if other kinds of material or equipment where needed and when you asked to order a product, it was often ordered the same day. These little details make a big impact in the workflow of a project and me as a student felt supported. The same is true in the way he gave feedback and possible solutions on certain problems or ideas. He knows, and wants to know, in detail how a certain aspect of the software or process functions, which makes his ideas and feedback very practical and on point. Lastly a big thanks for the opportunity to turn this project into a paper. I probably didn't state this enough in person, but I am very glad that I was able to participate in the creation of a paper. I am very happy that i got to do it. Also a round of applause to Prof. Ph.D. Daniel ASHBROOK and Dany LEEN who both provided feedback on my work despite both being very busy. They also contributed on the paper about this project. A good portion of the pictures from this project are taken and edited by Dany. Thanks to the both of you. Lastly thanks to Jose Maria TIJERINA MUNOZ, or 'Chema', for helping me out on little things like problems with the lasercutter, casting resin, finding a tool, ... And my girlfriend Charlotte for having to put up with me when I needed to write(i don't like writing at all) or when I had no time while working the paper or around other deadlines.

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Metamolds

Cited by 28 publications

References 34 publications

Strong 3D Printing by TPMS Injection

Strong 3D Printing by TPMS Injection

ZomeFab: Cost‐Effective Hybrid Fabrication with Zometools

StackMold: Rapid Prototyping of Functional Multi-Material Objects with Selective Levels of Surface Details

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