It's neither tough or simple. If you want to just build a drone, there are kits available in the market which you can simply purchase, assemble and fly. They will be much cheaper in comparison to building a customized drone. It's neither tough or simple.
How are drones made?
The bodies of modern UAVs are mostly made up of composite materials. At the Aeronautics factory, workers employ a series of labor-intensive processes in which thin sheets of composite materials are combined to create solid pieces of the drone's airframe.23 oct 2015