Creating the Roof

Before we start modeling the Roof, let's have a closer look at some reference images. We scaled the images down a bit and apologize for the decreased image quality. Note that the roof is connected to the Side Rear via small bars. We model from the Side Rear to the roof, so we start with the small bar and then create the Roof. The small bar and Roof are separated by a small seam.

Note the shape and the ribs in the roof structure

Take a top view and duplicate the Side rear object. Select the duplicated object, and delete all edges, except the ones selected in the next image. These edges are used to build the small bar that connects the roof with the Side rear object.

The red lines and arrow indicate the area that needs to be modeled..

Keep adding new faces and make sure the mesh stays aligned to the blueprint. The next image shows selected edges. Set Edge sharpness to 'Sharp' for these edges.

Set Edge Sharpness to Sharp for selected edges

Take a side view, switch to Point Edit mode and align the new Roof faces to the blueprint.

Align new Roof faces to the blueprint

As said before, the transition from the small bar to the roof will be created from the same object. First we extrude two edges to create the seam (see next image). These faces that make the seam need to be destroyed when you have finished modeling the roof.

The arrow points at the seam

Keep on creating new faces and make sure you have edges at every line in the blueprint. This makes aligning the shape to the blueprint easier. Also check in side view if your mesh still aligns with the blueprint.

   
Align the mesh in side view..                                              and it looks like this!

 
 Extrude new edges along the dotted line

To prevent any problems when merging the two halves of the car, set the X-coordinate of the last points to zero (0). Use the Property window for that task just like you did when modeling the Hood object.

Set X-coordinate to zero for these points

Just a workflow tip...

If you like to select edges quickly, it sometimes is easier to select points first and then switch to Edge Edit mode!

   
Select points...                                                                 and switch to edit edges mode!

To make the Roof object complete, you select all edges on the side and extrude these a little downwards to create a vertical edge. This is similar to all other objects we have created before. See the next few images:

Roof modeled, but not quite finished..

Edges at the rear of the roof are selected and extruded downwards

The first edges are extruded just enough to be able to make a seam

In Point Edit mode adjust the height of the points when necessary

Don't forget to delete these faces to create a seam!

Select these edges and extrude them downwards and set edge sharpness to 'Semi sharp'.

Edges extruded to vertical faces and the edges are set to 'Semi sharp'.

When done, save your work!