Dual extrusion systems for 3D printers have been around for quite a few years, but the additional cost, complexity, and hassle of printing with them have kept them off the workbenches of most hackers.
The Creality Ender-3 V2 ($319.99), an upgrade to the popular Ender-3, is an inexpensive open-frame 3D printer that comes as a kit. You'll want to be DIY-minded to take on this build, as it takes ...
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