Grandma has one of these cheaper ones and it just self-destructed in the wind yesterday. She called me over because her cattle shed roof was lifting 3 feet off its posts, so we got it pulled back down and secured, but while in the house I seen the windmill start shaking like it had gone out of balance and next thing I know 4 or 5 of the blades went flying off, it broke the welds on the outer ring. I’ll try to remember to take a picture tomorrow…