You need to export the segment to a model node so that you can save it to STL. Easiest way is to go to Data module’s Subject hierarchy view, right-click the segmentation and select Export visible segments to models.
You need to export the segment to a model node so that you can save it to STL. Easiest way is to go to Data module’s Subject hierarchy view, right-click the segmentation and select Export visible segments to models.