Blender Nerd Render Wireframes in Cycles with Freestyle

Now that it’s possible to use Freestyle with the Cycles render engine, we can easily render a wire frame overlay of the geometry of our models.
The only ways to do this previously were overcomplicated and limited, showing either all the triangles generated by the renderer after all the modifiers, or stretched wires where the thickness depended on the size of the face. Now however, we can do it the proper way, choosing to show the original quads before any subsurf modifiers, and wires that are all an exact thickness.
Not only that, but Freestyle, being an amazing tool for non-photorealistic rendering, allows us to add some fancy effects to our wires, such as dotted lines, brush strokes, textures, opacity and more.

Go to this Blender Tutorial!