Why PETG specifically have bad tolerances
I am fairly new to 3D printing, as the Creator 5 Pro is my first printer.
Recently I calibrated my filaments - PLA , ASA , PETG.
I used this youtube guide - https://www.youtube.com/watch?v=gVU5If1VsAM
For both PLA and ASA the results were BIG improvements in both the visual aspect and functional (tolerances)
However, for PETG, even though visually it seems perfect now - the tolerances are off.
Trying to fit bolts and nuts printed in the calibrated PLA and ASA works flawlessly.
However the PETG ones looks great but never fit.
I do not understand why.
EDIT: additional context
I printed the Orca Cube in Orca slicer. The cube dimensions are perfect (30x30x30mm) But the screw at the bottom only fits halfway, and then it is stuck. When printed in ASA or PLA it fits. cube dimensions are the same. Used digital calipers to measure. The screw from the ASA and PLA cubes fits the PETG cube, so the problem is the threads on the PETG screw/s