Decided to spend a day doing this model, but it didn't require all that time. While surface modeling is great for many things, I think it's fair to say that it's not generally applicable to all situations. The main fan housing in this model was created using a revolved spline that took seconds to do and although you could use surface modeling that would seem a bit crazy for a symmetrical object such as this. Rendered in Blender 4.3. This model was from an image - taken at an oblique angle - I found on Pintrest. There were no other images available and I've made a few modifications to the design. I may get back to adding decals at some stage, but this will do for now.