Giant Wire Nut

Wire nut. It has no internal threads and a cone shaped inside for easy printing on aggressive settings.
I printed this in PLA with a 0.4mm nozzle and 0.4mm layer height and 0.8mm line width. (I recommend a larger nozzle if you have one). This took just under 10 hours and is 9 3/8" tall.
Made on a Raise3D E2, not N2.
The step file and 3mf is made in solidworks and has clean faces and fillets. The STL is reasonably high resolution but has visible facets if made very, very large. The shiny filament used makes this more prominent. Printing in a matte blue or red would look much better.