Is it possible to remove some features of a part that are created together and change them into an assmbly? Or would you have to just recreate the pieces again. I am attaching the file. I am trying to remove the two arms sticking out that would be fitted with hydraulic pipes, they are concentric with an axis going across so I would like to make them spin with the axis when I turn it but I created them in the frame part file instead of an assembly and inserted it later... get my drift?