I need a small illustration for an academic article that I am writing.
This will be a small 3d figure, showing a shaft, a flywheel/propellor, and three "flows" of information that go through the propellor part of the flywheel. There will also be a few labels on each of the elements.
It may be easiest to create these elements in a 3D Cad system, then do a perspective rendering. But it could also be sketched freehand and inked if that is easier or quicker.
To spec the job, I will supply a bunch of freehand drawings of what I think it should look like. But these will be of poor quality as I don't draw very well.