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3dsmax Clay+Wire
forget vray, no need for that, as the effect you desire can be done easily by default with 3dsmax.
first, get your object's base mesh (with no meshsmooth on it) and select all the edges on the model. Now, find the button that mentions create shape (~max 4.2), or Create shape from polys I think is in the later versions.
now a new spline object is created that has the same structure as the edges of your mesh. In the Rendering panel, change the thickness to .5 or something like that, and choose rendering sides as 6. Check off that you want it to be renderable, change it to show render mesh, and now assign an all-black material to the spline object, and render.
alternatively, you can clone the base mesh, use a push modifier with a value around .05 in the push modifier to make the new object slightly larger than the original, so no z-fighting occurs, and assign an all-black material to that. Now in the material, check off the wireframe option, and if you need to, adjust the width of the wireframe material using extended parameters in the material editor.
So yeah, hope that helps.
also, a technique my instructor once told me... but ... um... a very crappy technique IMO is to either make a square image that has a black outline around the edges of it, and then load that up into the material, and assign it to the object and change it to make it a face map in the material editor.... it produces somewhat similar results, but large faces and small faces are different sizes, and blurred up, so IMO, it looks pretty bad compared to the previous methods I mentioned...
if you like that method, but don't like the blurriness, you can also, instead of using a regular image map, you can use a gradiant ramp map, changed to "box" and with custom points on the gradient ramp to make a black outline like that... adjust/add/delete the custom points to refine the way your map looks. quality of the edges can be adjusted with the supersampling panel, and enabling supersampling, of which Adaptive Halton with a quality of 1.0 looks the best, but takes the longest....
hope that helps
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