Dear all, 

I am struggling with the conversion of a surface of a fuselage into a solid body with a specific thickness. The file comes from a friend, who exported it in iges, and it is directly converted by solidworks in several subsurfaces. But, if I try to use the command thicken I get errors of zero thickness, or self intersecating issues. I cannot knit some parts together, although they were one single component before imported into solidworks. What can i do?