The flexible diaphragm in the fluid cell press allows most kind of forming in block dies, cavity dies and expansion dies. Shallow/small tools may be mixed with high/large tools in one and the same forming operation. Undercuts, intricate shapes, as well as trimming and cutting may be performed by the fluid cell technology. The fluid cell press provides full pressure all over the tool surface, contrary to the rubber pad process where the pressure drops dramatically in the lower section of for example a block tool.