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I need to render my models in wireframe (no solid). I first turned to the Wireframe modifier, it works great. Only I can see through to the wires at the back of the model. I need to render only the front-visible wires, otherwise it just clutters the view. Is it possible and how? (No matter if it's BI or Cycles in this case.)

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  • $\begingroup$ Have you tried to adjust the Clipping parameters of the Camera? $\endgroup$ – Paul Gonet Sep 11 '15 at 17:30
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    $\begingroup$ I don't think that will work as I have 2 rows of models, one behind the other, so I need to render front-wires of both rows, and hide back-wires of both rows. $\endgroup$ – Aardo Sep 11 '15 at 17:32
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Add a Geometry node and use the backfacing information to control the transparency of the object:

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The inside "backfacing" geometry will be transparent and the "front facing" will use the wireframe.

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  • $\begingroup$ Ok, I played with this solution, it seems to work. There is one problem though. All the implicit edges show up. Say I have an N-gon, all the edges within the N-gon show up, which are normally invisible. Is there a cure for this too? $\endgroup$ – Aardo Sep 11 '15 at 18:24
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    $\begingroup$ That is a limit on the cycles wireframe node - it only sees the geometry that is sent to cycles for rendering, which is a triangulated mesh. $\endgroup$ – sambler Sep 12 '15 at 12:36
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Ok, I played some more. And I found an acceptable solution. I use the Wireframe modifier. I set it to solid (don't replace original). I set 2 materials on the object, white and black. Set the solid to white (emission shader) and the wireframe to material offset +1 (meaning black). And I get a nice clean geometry with only visible wires and edges.

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