I've been trying to make a motorcycle helmet. I thought it would be just one part, but I downloaded one from grabcad and it's a very complex assembly.
Now I could try to make it one part so it's simpler. That might cut costs for the manufacturer, but I'm sure there's a reason that it's not already like that.
Another thing is it's hard to find dimensions for a motorcycle helmet. I can find basic stuff like the size, but not the details. The file I downloaded is imported from 3ds max so it doesn't have all the information I need. It's hard to make it look right without any dimensions to use as an example.
I could also just turn my helmet into a different type of helmet. My school assignment just says I have to make a helmet. Maybe a rock climbing helmet or a bicycle helmet will be easier.