I'm guessing it's something pretty dumb and obvious, but when I print a something from Thingiverse/Printables/etc, I can never get it to be dimensionally accurate.
I don't need it to be stupidly accurate, but eg I printed a case for a RPI 3b. All the screw holes are slightly too small or wrong position making it useless.
I've done the following:
- Extruder rotation distance calibration
- Input shaper
- Pressure advance
I'm not sure what else to try?