That said, one could also use an IDEX printer to print the target material and a water-soluble support material at the same time. That way, overhangs are no problem again because you have support material under them.
That said, additional axes beyond XYZ seem to be the next major development for hobby CNC --- looking forward to seeing what folks come up with.
Beyond that its seriously annoying to home and align a five axis machine. These machines would at least need absolute encoders to really be usable for hobbyists. Some do now but it's still pretty rare.
https://www.pentamachine.com/pocket-nc
(but yes, most software for that is ITAR-regulated)
but for 3D printing the forces are a lot less and there's a lot of potential, and there are other cutting options such as wire EDM (saw a hobby-level implementation for that recently)
Actually, you can order a cheap Genmitsu CNC, the RATTMMOTOR 5-axis upgrade, and the BIGTREETECH SKR 3 EZ controller board from China. GrblHAL is a suitable open-source firmware. And Fusion 360 will happily create the toolpaths.
So I don't understand which part is export controlled.
Multiple axis CAM software is also export controlled.
The folks who make the hobbyist machine I linked have a page on this:
https://www.pentamachine.com/blog/whats-the-deal-with-5-axis...