In every woodturning apprenticeship in Germany, you have to learn how to turn an exact sphere without measuring tools. In this class, you will get a very small part of this apprenticeship. Part of the class is explaining how to make a cup chuck and how this chuck works for making spheres. The sphere will develop from a square piece step by step. Everything will be explained very exactly, from turning with a gouge to using a skew chisel and sanding the piece without spoiling the shape. Every student will recognize how easy it is to work exactly when they know the little tricks. Depending on the time, Hans plans to have students hollow out end-grain pieces with a gouge. But finding out how it really works is difficult. There are some points that create problems. Hans will help solve all of them, and, in the end, everyone will be able to use this system, which is really helpful at home in their own workshop.