To create a doorway, we can select the wall model and use the Ctrl + R keys or the Toolbar button, to activate the loop cut. Remember, you have to click twice to first set the direction of the cut and then to choose a position for the new loops.
Here are the steps to cut:
- Press the Ctrl + R keys or use the Toolbar button.
- Move the mouse over the edge you want to cut and left-click once to choose the cut direction.
- Now you will select the cut position. Move the mouse and left-click again to mark the cut location.
For the door at the back of your model, you will need two cuts. Make the first one as shown in the following left screenshot, and the second as shown in the following right screenshot: