@donpedro said in Accurate dimensions:
I don't think it helps me because this difference is not constant, I could adjust it from the slicer if it was like that, but it doesn't work
I have for example the following values on one axis, as the others differ
24.68
19.78
14.82
9.95
5.06
It looks to me that you have a scaling error of -2% plus an excess extrusion width of 0.75mm on each side. That would give actual sizes of 24.65, 19.75, 14.85, 9.95 and 5.05 which are very close to what you measured.