This is an architecture tutorial on how to model a door with blender 2.78.
The door will be rendered with cycles and in the end I will also add animations for the handles and the door itself.
I start here with creating the handle for the door and give it a metal material:
Then I am going to create the keyhole plate:
And after that I add the door itself with a small hole for the keyhole to make it look more realistic:
In the the next one (Part 4) I will add the holders on the side and the door frame. Then I will animate it and let a light shine through the keyhole first and then open the door and flood the room with a sunlight.