Personally I like ABS over PETG, but when the temperature is too low in my garage ABS fails about 100% of the time, whereas PETG looks and performs better the colder it is – seriously, it prints like a dream if the ambient temperature is in the mid to high 30s (F). This echoes the comment above about stringiness being less with the fan on.
With respect to ABS hiding artifacts of 3D printing, or even defects, I totally agree that it is true. While the example above also has the color issue, PETG is inherently shiny while ABS is matte or at most semi-matte – this means that even in a same color scenario, ABS is going to hide things more. It’s the age old preference between glossy and matte/semi-matte – monitor screens, photo prints, plastic parts. Some people like shiny, some don’t. I’m in the don’t camp so aesthetically speaking, ABS kills PETG IMHO.
I like PETG because I can print it in my unheated garage, and aesthetics aside, the best plastic is the one that functions properly. When summer comes back however, I’ll switch over to ABS.
Cura Fan Settings: in expert mode, select “expert” from menu and choose “expert config”. A popup window appears and in the “Cool” section, you can enter in the height at which the fan goes to full speed, limited by the “fan max speed (%)” setting below. I’ve found with my 8 month old mini, the fan won’t start to spin below 45% power.
While PETG itself might be food safe, remember that most brass has lead in it and there isn’t any real info on how much leaches out of the nozzle during printing. Secondly, printed pieces do not have a smooth surface like a molded object, and all those crevices are a great place for bacteria to live and grow. If using printed parts for food, it is probably best to think of them as disposable one time use objects.