Nobody wants to talk about printing 3-mm filament on a Voron, but I have filament I want to use that was only available in 3 mm. So I ordered a bunch of vitamins and remixed the AfterBurner extruder and E3Dv6 hotend holder and here we are, making test prints with ancient MakerBot ABS before moving on to the new stuff.
Benchy can certainly use some tuning (at least a tad more cooling) but is reasonably respectable for sixty minutes of slowly pushing 3-mm filament through a 0.4-mm nozzle.