TinkerCAD is a great, beginner-friendly software. However, it's limited in functionality, so I had to switch to SelfCAD.

Lumion Student is a free professional tool for architecture ... are immersed in their visualized design from the moment the 3D model is imported. Quickly test ideas - Lumion mitigates the slow ...

For your model plane he selects ... it is to download your plane for 3D printing. Watch as he explains how to save the design and then print it with the software that comes with your 3D printer.