Recently, an interdisciplinary research team at North Dakota State University (NDSU) printed a self-replicating 3D printer and tested it. This is an important step in the development of 3D printers that can self-replicate and print any other product or component. This 3D printer can no doubt be used for a variety of purposes, including unmanned space exploration.
NDSU's 3D printer adopts a modular design. The ultimate goal of this project is to develop 3D printing technology capable of printing anything and software that can control and guide an entire 3D printer chain.

“There are many potential applications for self-replicating robots. By using on-site materials, it is possible to create a large number of initial robots and greatly expand the robot team’s ability to perform. Replacement parts can also be produced, so that the damaged machine back to work ,†the researchers explained.
Using "on-site" materials is one of the major challenges facing the project, but if you want to use this technology for space exploration, you must do this. At present, many parts of the 3D printer, especially electronic components, are printed with metallic materials that are not available in resource-constrained environments such as the surface of Mars or the Moon.

The concept of being able to print your own 3D printer originally came from the 2005 RepRap project. By 2008, the RepRap 1.0 "Darwin" model had successfully printed more than half of its own components, paving the way for the birth of fully self-replicating 3D printers.
Although there is still some distance left to issue a fully self-replicating 3D printer, researchers are full of confidence in the future of the technology because they have made progress with algorithms.
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