3d foam pen
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A 3D-Printing Soap Suds Pen Takes Bubble Baths To The Next Level
Replacing desktop 3D printers with hand-held 3D-printing pens never quite lived up to the promise of letting users turn sketches into real-life objects. And that’s partly because 3D-printing pens aren’t as forgiving as this 3D Foam Pen that swaps melted plastic for soap suds.