Task 2. Use layers to blank the extraneous drawing entities

Imported .dwg files maintain their AutoCAD layering scheme.  Simply blank all the layers and show only the layer that has the relevant entities desired for creating the solid 3D geometry.

1. In the Navigator Browser panel on the left,  right click on LAYERS and select Hide.

2. Scroll down the Navigator Browser Panel, right click on LINE_M and select Unhide.
   

   

3. Click Save  from the main toolbar and OK in the Save dialog box.