Can anyone suggest what’s causing the twisted faces and i don’t mean flipping normals on a face:
This is a model of a window, yet the window frame has got a bevelled appearance and some of the faces are twisted, as if one of the vertices is upside down causing the gradient effect from the corner of a face. The images show a mild example of what is becoming a real pain.
The window was created from a DXF import of 2D geometry (ie. s flat mesh) and then edges/verts selected and ctrl f to create faces and the edges extruded to give the window frame depth.