DXF and then import that in Blender. These may then compiled into models or static props for your levels.
In Hammer go to File then choose Export to. Exporting to STEP format ( STP) SketchUp.
You can find the latest version here. VMF export plugin allows you to export SketchUp models. First, download SketchUp.But I am not sure how to. I now have extensions and Export SMD/ VTF. For more information, see SketchUp to SMD Export plugin. Installation Download unfoldtool. Plugins folder doesn’ t exist and I can find SketchUp only in programs files. Sketchup smd export plugin download. Valve SketchUp Source Tools.
This plug- in lets you import DXF files into Google Sketch- up. It is available as freeware and used it accordingly.