**** Open Source LibreCAD Tutorial Three-Panel Projection Penetration Prism by Square
The tutorial shows how to draw a penetration between a prism and a perpendicular square in a three-panel projection. Furthermore, the video shows the basic operation of LibreCAD, a free 2d-CAD software.
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Video Tutorials
Github link: https://github.com/LibreCAD/LibreCAD
Download link: http://librecad.org/cms/home.html
