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CAD tip CAD tip # 3383:

Question CAD 
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Q - question

Some walls are transparent in a rendering.

A - answer In a model converted from Architectural Desktop to VIZ some walls are rendered as transparent (missing) - have probably wrong face normals.

In the DWGLink settings switch on Unify normals - this makes face normals (back and front) look "standard". Alternatively, you can use double-side face rendering - choose 2-sided on the selected material. Switch off the "Backface cull" setting on the object level.
100% *  CAD 
30.10.2003    8207×  
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applies to: AutoCAD Architecture · AutoCAD · VIZ · 3ds Max ·

See also:
Tip 11278:Undocumented option to switch AutoCAD 2016 to the Mental Ray renderer.
Tip 10859:How to suppress a surface body in rendering of an assembly?
Tip 10804:What features are not available in the 32-bit version of AutoCAD 2017 and 2016?
Tip 10340:Rendering CAD assemblies in various formats in 3ds Max 2016.
Tip 10296:Using cloud render in Fusion 360.

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Generate hatch patterns automatically from your DWG drawings with
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