With it, you can access and control almost any feature of FreeCAD. It permits optimization of the files disposal. For files repetition (various copies of a same model), the most suited solution is to use the online Sculpteo tool for series production (up to 20 pieces). (Indeed, the documentation suggests the Sketcher was only intended to be used for this purpose.) Extruding a 2D face in FreeCAD makes a single solid of uniform thickness. It is designed for those who are looking for a CAD program that will make you able to design real-life objects… It is not always possible to calculate the cut list properties accurately for a body created using the combine feature. It is strongly recommended that you do not use the Combine feature to combine weldment bodies.
You can combine multiple solid bodies to create a singled-bodied part or another multibody part.
