Converting From a SMesh to a Solid

To convert a smesh into a Solid, just toggle the option in the 3D properties of the object. When converting from a TC Surface into a smesh, a set of facets will be generated from all of the facets of the smesh and all of its Smoothing level subdivisions. These are converted to Facets on the Solid. This can radically increase the number of apparent facets on the object, and generate some unpredictability of results. In many cases converting to a TC Surface first, then to a Solid will improve predictability.