I have problem with my Ender 3. Whenever I print, I have proper outer dimensions (accuracy usually better than 0.1 mm, sometimes a bit worse), but every hole, pit or any inside dimension is inaccurate (0.6 - 0.8 mm never less or more).
I have tried extruder calibration. Calibrated extruder voltage and e-steps (in Ender firmware), but this does not change a lot.
Here you can see test dimensions I modeled:
And it will come out with these dimensions:
Aaand the final print looks like this:
As you can see, my estimation (second picture) was almost perfect. 19.3 mm and results are weirdly consistent. Always holes are 0.6 - 0.8 mm smaller than holes in model.
Do you have idea why this is happening?
- Printer - Ender 3 with original circuit board
- Printer software - Marlin 2.0.5
- Model cutting software - Cura 4.8.0
- Modelling software - Fusion 360