Translations:Creating a simple part with Draft and Part WB/40/en

The tool tip says it all, in order to extrude into a solid one needs a closed wire, or a face. A face is, per definition, simply a closed wire that is filled. One way to create a closed wire out of our profile edges is to select them all and apply Draft Upgrade. If applied once it becomes a wire, while at the same time it consumes the individual edges from the Tree View. If applied twice it becomes a face, either of those allows for a successful solid extrusion.