I dont know if everyone here knows this, so ill make a quick tutorial about it.
Step 1
Copy your model in place! Right-click ur model and pick Clone.
Step 2
Step 2 is applying "push" modifier to your model. Open The modifier rollout on top right. This makes the model expand, add a small small effect to it, like 0.2
Step 3
Now u will have to make the copy into a wireframe, do this by opening the Material Editor(M hotkey). Pick any material slot, change the diffuse color to black(probably the easiest color to use on a wireframe. And check the "wire box".
This is what it should look like:
There u have it, a model with wireframes neatly displayed on top. This is nice to have others asses your model, and the structure of your wire. <!-- google_ad_section_end -->