What do I need to use your 3D printer-ready files?

At minimum, you should expect to need access to a compatible 3D printing workflow, whether that means your own printer, a print service, or the software knowledge required to prepare and print the model properly. Basically, you need any slicing software that can read a 3MF file and a printer. A digital 3D model is not the same as a finished object, so some technical competence or tooling is assumed on the buyer’s side.