You can choose whether to create the inserted features as surfaces, solid protrusions, or solid cuts. You can insert the solid features as additive or subtractive solids. However, you cannot subtract material from the existing model if it is not a solid.

To insert geometry as solid protrusions or surfaces, the imported geometry must consist of at least a single closed quilt. Additionally, during the initial import of the geometry, you must set the Solidify closed volumes import profile option. While the default setting of this option creates surfaces, setting Solidify closed volumes to Yes creates solid protrusions. You must also explicitly set the Import type option to Geometry in the import profile or the File dialog box as you cannot create surfaces, protrusions, and cuts from curves or facet geometry.