Sometimes 3D printers mess up. They extrude too much material, or too little, or deposit material in the wrong spot. But what if this bug could be turned into a (fashionable) feature?

Introducing DefeXtiles, a tulle-like textile that MIT Media Lab graduate student Jack Forman developed by controlling a common 3D printing defect — the under-extrusion of polymer filament.
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https://news.mit.edu/2020/defextiles-leveraging-3d-printer-defect-to-create-quasi-textiles-1020