There's a number of so-called "3D Printing Pens" on the market now, or coming soon, though in reality I think they should be called "3D Drawing Pens". I mean, you don't have a "2D Printing Pen" do you? Pens are for drawing, they are not printers that print. I know a lot of people are []
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Model: Drawing Printing Pen. Type: 3D Printing Pen. Printing Consumables: PLA/ABS 1.75mm Material. Finish: Solid. Size: 18x2.8cm.
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Multimodal Cross-Device and Marker-Free Co-Registration of