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"Finding a way to remedy the inadequate bonding between printed layers has been an ongoing quest in the 3D printing field ... printed parts are weaker than identical parts made by injection molding ... To promote inter-layer bonding, the team turned to carbon nanotubes. Since these carbon particles heat in response to electrical currents, the researchers coated the surface of each printed layer with these nanomaterials. Similar to the heating effect of microwaves on food, the team found that these carbon nanotube coatings can be heated using electric currents, allowing the printed layers to bond together. ... With the plasma technology and the carbon nanotube-coated thermoplastic material in place, ... researchers added both these components to conventional 3D printers."
Researchers Invent Technology To Remedy 3D Printing's 'Weak Spot' - Texas A&M Today Texas A&M and Essentium, Inc. researchers have developed a way to more effectively weld adjacent printed layers together.
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