How to render "wire" only on the edges?

We have a client who wants something similar to this:

Is there an easy way to do this in corona? Or some plugin anyone knows about?
I’m guessing I would need to render some sort of wireframe-pass that somehow only affects the edges.

Alternatively, you may want to try this hack: Corona Tips & Tricks - Corona for 3ds Max :: Tutorials & Guides - Chaos Forum

Yup, you can even add this as CTexmap.
Another version: Has corona anything like "toon core" has in the case of vRay? - Corona for 3ds Max :: Help Required - Chaos Forum

Mental Ray plugin ;] with it´s contour shader(s)?

Good Luck

Is there no plan to add contour option to CoronaWire map ?

Used this software, it’s a Japanese plugin for max. The operator has good control of line quality, with presets. Objects, groups can be assigned different type of lines.

Another option is finalToon, as a standalone program.

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