Learn how to create a 3D terrain model (DTM) from contour lines in SketchUp using TopoExport! In this tutorial, we walk you through importing a topographic file, isolating contour layers, and generating a custom terrain surface with the Sandbox “From Contours” tool. You’ll also learn how to smooth your terrain mesh for a cleaner, more professional look using the Soften/Smooth Edges feature. This method is ideal for designers, architects, and landscape planners who want full control over their terrain modeling.
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