This is a 1/72 model of a bunker based on the Ausbau Westwall Regelbau Nr. 1. During WW2 the Germans built bunkers along their south-western border to protect against the French. Note that the model is roughly based on the Regelbau drawing, but has been changed significantly.
Please post a picture of the bunker if you have printed one. I don't have a 3D printer and would love to see the result!
Edit: I included another door model, since I didn't like the initial one.
Leave a tip if you like my work :) I would love to make more of this kind of stuff, so please help me out :)
Message me if you have specific requests :)