Researchers have developed an unusual material that could be of great use in 3D printing.
stretchable
New Soft, Stretchable Metal Can Be 3D Printed
While attempts to develop a new material may not always pan out, a successful attempt in 2018 has led to ongoing research and new potentials.
How To 3D Print Stretchable Wires
Stretchable wires are an exotic component, but now it may be possible to 3D print them directly into objects for industry and research use.