Hi, I just finished my biggest print so far. I got this from thingiverse. I am quite happy with the result.
Ender 3 Max, 0.4mm nozzle, Cura 4.8 - estimated 36h7m. Took 35h17m.
I scaled the original model at 200%. Next time, if any, I will use 230% to get closer to my head size.