I rarely take mine off, it is made to sew with it on or off. I do have a case for when I travel or in the rare times that I sew with it off. When I had the Viking Ruby, I only bought the case for the emb arm and fit the machine in a case from Joanns. I wanted it protected since I knew it would be easy to break or misalign. My Diamond Deluxe came with a case, well actually 2 cases. There was a special when I bought mine that included free cases for both parts and it already came with the case for the arm. The store offered to try and sell it for me but since at that time they all were coming with them no one needed it so it sits in the closet.