The series of vessels are created from one basic form. By adding two basic forms, we get a new shape (vase / vessel). When the cut level of this form is changed, we get the following new forms. Having one basic form we can get a different product. Possible materials: ceramics. Also, the distinguishing feature of the project: manufacturability for production. You do not need to create several different plaster molds for ceramic castings - just make the same castings of the same base shape, and connect the two forms, and then we can do different cut level.