2 hours into a 5 hour overnight print, filament ran out, auto detect paused of course, 6 hours later loaded new roll, totally different brand, about 2 years old, never dried or even stored in a box, resumed print. Flawless finish, can't even tell where the merge line is. Bambu labs would have to kick a puppy for me to hate them at this point. Routinely even wonder if I am worthy of this incredible device. #3dprinting #p1p