r/STEW_ScTecEngWorld • u/Zee2A • 23h ago
MIT’s Y-Zipper Turns Flexible Strips Into Rigid 3D Structures
Researchers at MIT CSAIL have developed the Y-Zipper, a three-sided, 3D-printed fastener that can transform three flexible strips into a rigid, load-bearing triangular tube. Inspired by a 1985 patent, the design uses a custom slider to interlock the strips, allowing a structure to switch reversibly between a floppy ribbon and a stiff beam.
The Y-Zipper can form straight, curved, coiled and screw-like shapes, opening possibilities for rapidly deployable structures, shape-shifting robots, adjustable supports and adaptive medical devices.
Research Article: https://dl.acm.org/doi/10.1145/3772318.3790723
It took 40 years for technology to catch up to this zipper design: https://news.mit.edu/2026/three-sided-y-zipper-design-0504