Midsection challenge house with a little cheated back (yes, i know shadows would be slightly different with complete back side) 
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Ok, but why?
Render times aren’t influenced. Only memory consumption and working in the editor.
2 Likes
Like Fedpete ,I see no reason not to have the back there as well. Even if you only duplicate and rotate the same two sides you have done.
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I think mainly to show my girlfriend that not everything is what it seems to be Also I just took this midsection as practice what I learned so far, extruding, editing and playing with vetrices, so dont juge me please too harshly 
1 Like