When the author began teaching, she always hit a problem when it came to 3D shapes. She wanted the pupils to get a feel for them, and she would get them to make the shapes from their nets. The pupils would first try to visualize how the 2D nets could become 3D shapes and then they would physically fold the nets into the shapes for themselves. Octahedrons, dodecahedrons, prisms, icosahedrons and even cubes led to a lot of mess and disorder. Pupils would accidentally cut off the tabs or forget or misunderstand which edges had to be glued together. All in all, a lot of hard work went into making very unsatisfactory models instead of things of beauty that they could show off and at the same time use to explore spatial properties. The author learned that the solution to the problem was pull-up nets. In this article, the author describes an easy and exciting way of making 3D solids from their nets without the need for any glue. Basic instructions for pull-ups are included. (Contains 5 figures and 4 notes.)