For those with an interest in 3D printing...
I've been digging around lately for compatible resources to work with, and came across a tool called [Printrun]. It has a command line interface for connecting to and controlling 3D printers called "Pronsole" thats screen reader accessible. The Pronsole gives feedback on nozzle and bed temperatures, progress, and functions for controlling a 3D Printer, which can allow users to bypass the normally inaccessible hardware readouts and controls. The tests i've done with my rig and Anet A8 have been a bit flaky with inconsistent control and thermal readings, though that could be for a number of reasons, awkward chinese com drivers for example. Getting a second opinion from some other 3D printer enthusiasts running different hardware who use the program on KDE Debian seems to work fine.
I've also tested some available slicers for converting 3D models to printable gcode, Cura's GUI is inaccessible, but curaEngine has a command line system that could work. [Slic3r] though is almost entirely accessible, it has a robust command line system and screen reader compatible GUI, although its a bit fiddly for loading models, you have to tab to the 3D view row and move all the way right to the "layers" option, hitting tab after that should highlight the "add" button, which you can use to load stl models. The model display is still inaccessible, which can make positioning and scaling potentially problematic. Viewing the models in AudiMesh3D before hand though may help give an idea of the models default position and scale to work with. A copy of Slic3r is also included with Printrun.