Trying to print support

I am trying to add supports to a wind turbine blade using sloc3r. I enable support in the configuration settings and let slic3r automatically decide what needs support. However, when I slice the blade it turns the entire blade into support material. Anyone have a clue as to what is wrong in my settings?


A gentle slope doesn’t really work with support. Dissolvable filament and a dual extruder is kinda the only way for that.

Can you orient the part a different way so the slopes are not so steep?