Not IP related, but I built a Voron printer a while ago, which is sort of the last word in DIY printers. It's not so much a printer as a parts list and set of instructions, but something that's not lost on me is that most of the core components are Chinese parts.
I don't just mean screws and bearings (though they are too), you might install a board like this [0] which is a Chinese designed board I'd describe as open-ish. You get the firmware and schematics, but not a BOM or board layout. But that doesn't really matter, because nobody is going to make this board themselves anyways, you're going to buy it assembled, from China. There are other boards, but they are more expensive.
The majority of Voron builds use Chinese hotends. There are a lot of custom "for Voron" kits and components being made and sold there. Can you find a PEI-coated spring steel bed that isn't made in China? So while it's definitely more open than a Bambu printer, it's not really any less dependent on China.
I guess it would be technically possible to do a "no China" build, which would be an interesting (but expensive) project.
0 - https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0
I don't just mean screws and bearings (though they are too), you might install a board like this [0] which is a Chinese designed board I'd describe as open-ish. You get the firmware and schematics, but not a BOM or board layout. But that doesn't really matter, because nobody is going to make this board themselves anyways, you're going to buy it assembled, from China. There are other boards, but they are more expensive.
The majority of Voron builds use Chinese hotends. There are a lot of custom "for Voron" kits and components being made and sold there. Can you find a PEI-coated spring steel bed that isn't made in China? So while it's definitely more open than a Bambu printer, it's not really any less dependent on China.
I guess it would be technically possible to do a "no China" build, which would be an interesting (but expensive) project.
0 - https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0