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. 2023 Nov 15;623(7987):522–530. doi: 10.1038/s41586-023-06684-3

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 3 — a, Weight gain for rigid polymers under solvent exposure according to ASTM D543. b, Weight gain for soft polymers under solvent exposure according to ASTM D543. c, Change in material properties for chemically resistant epoxy after five-day submersion at 25 °C, following ASTM D543. Tests conducted following ASTM D638: Type IV, 50 mm/min, average values represented. d, Tough epoxy accelerated aging test per ASTM G154, Cycle 1 over 1000 h exposure, average values represented. Top view (e, and g) and side view (f, and h) images of material samples in the test setup for exposure according to ASTM G154, Cycle 1. Our tough epoxy material (e, and f) did not show warping compared to the state-of-the-art acrylate-based material (Stratasys RGD720) (g, and h). i, Soft thiol-ene accelerated aging test ASTM G154, Cycle 1 over 1000 h exposure. Tests conducted following ASTM D412: Die C, 500 mm/min, ASTM D624-C, and ASTM D624-B, average values represented.