Hye Kerbonauts. I've read many threads about modeling and I'm trying to create a simple hatch, just for testing. My mesh is a simple cube, I duplicated it to create a mesh collider. Then I added a smaller cube, and tagged it Airlock in Unity. In ksp, I don't have "hatch obstructed" problem. My Kerbal can eva, but he's somehow stuck inside the airlock mesh, and stay in the pod, so I can clone him to infinity. My airlock's z vector is pointing inside (I tried outside too). Here some screenshots to illustrate the problem. I'm sure i'm making something wrong, but as I'm learning, I can't figure out what.