0.2mm layer, 2 walls, 15% infill

Maybe calibration or filament - put a coin in the bottom to use more force. Also some moderat compression can help if something fused that shouldn't.

Jack

The Raw file is without notch the profile has the notch.

the file is a bit different than the preview images. there is no notch on the "Door" in the file

<p>Coaxial Eggshells that closes with a coin as key (floor). </p>