More info: https://blog.prusaprinters.org/3mf-file-format-and-why-its-great/
The most common and universal file format for 3D printing is STL. It was released in 1987 and it’s dead simple. It’s good enough most of the time, but isn’t there a newer, better file format that we could use for 3D printing? Meet 3MF – a new open-source file format designed specifically for additive manufacturing.