I am trying to model PC case. I know that one way to get panel is to slice an object and fillet the edges, but that does not quite fit the model in this case so I want to just straight carve it out. I made a curve over which I want the cavities to be, Here I am using a circle as a profile, but unless I scale it up, the boolean diff fails. Is it possible to get this to work in Moi? Also, I'd prefer it if the shape of the sigmoidal as with the other profile if possible, but that does not work for me either.