To improve 3D printing, simply add gel. A fresh technique uses one to support complex shapes that would fall apart under their own weight in normal 3D printing.
This new-found combination of strength and delicacy will be crucial if we’re ever to print the biological structures that make up organs, blood vessels and other tissue.
The gel, which has the consistency of hand sanitiser, is made of an acrylic acid polymer. It works like a scaffold, allowing the printing of intricate patterns that would collapse without its support – such as nested Russian-doll-like structures and thin, complex branching networks.
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