The open-cage printer will work using "fused filament fabrication" with 1.75mm filament, and will also feature 100 micron layer resolution (0.1 millimeter), rigid aluminum construction, an open-source software tool chain and optional heated build platform.
The service is all that care from the surgeon, the team of nurses, the time in a hospital bed, heck, the pain itself (you do have to cut openthe rib cage to do heart surgery).
In the third act, after seeing Django kill the Australians, the blacks sitting in an opencage neither communicate with each other or consider stepping outside of thecage.