Why can't the lines make a face from floor plan?
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I imported a floor plan for a two-storey house and was drawing lines trying to make faces for push/pull tool to form walls but somehow some lines I drew just were able to make a face! I could use rectangle tool instead but just want to know why...
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One reason could be the imported drawing has edges that do not exactly meet or intersect. Also ome CAD drawings are 3d and though it's not clear in a 2d projection some edges don't lie on the same plane exactly. Sometimes minuscule inaccuracies are not detected by SketchUp. They look right in SU but really there is no intersection making a closed shape. SU has some trouble deciding what is coplanar and what is not. For example performing intersect faces on a face will only catch part of all the faces that abutt that face. Nothing's perfect.
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