The video mentions a patent for the 3d printing tech. I think it's this one https://www.patentlyapple.com/2023/08/apple-inherited-a-3d-printing-patent-back-in-2

The video mentions a patent for the 3d printing tech. I think it's this one https://www.patentlyapple.com/2023/08/apple-inherited-a-3d-printing-patent-back-in-2015-and-today-were-learning-that-apple-is-testing-the-use-of-3d-printers-for-a.html https://www.patentlyapple.com/2023/08/apple-inherited-a-3d-p... To sum up, it uses an inkjet to spray binder to metal layer by layer.