A fantastic tool to help people learn how to use and understand software, making 3d models is also great! I am so happy that I found QCAD, it's exactly what I was looking for, simple, straightforward and intuitive, it allows anyone to learn and use it without any prior experience. I used to use AutoCAD LT but it was way too complicated, I had no idea what I was doing. With QCAD I learned quickly and now I have my own business designing mobile phone cases and 3d printed t-shirts. I love the freedom and simplicity of QCAD, its beautiful interface and powerful capabilities.