1. Sketchup make 2017 버전 다운로드 https://help.sketchup.com/ko/downloading-older-versions Downloading older versions | SketchUp Help help.sketchup.com 2. STL확장기능 설치 https://github.com/SketchUp/sketchup-stl GitHub - SketchUp/sketchup-stl: A SketchUp Ruby Extension that adds STL (STereoLithography) file format import and export. A SketchUp Ruby Extension that adds STL (STereoLithography) file format i..