SMRTR TechAug 30, 2026Interesting Engineering

4D printing explained: How it differs from 3D printing and where it could go next

SMRTR summary

4D printing builds on standard 3D printing by using smart, responsive materials that change shape when exposed to heat, water, light, or other triggers. First popularized in 2013, the technology shows promise in medicine, robotics, and aerospace, but remains mostly in labs due to challenges with durability and scalability.

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