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 explains 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 precisely, 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 precisely when you 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 points that create problems. Hans will solve all of them, and in the end, everyone will be able to use this system, which is really helpful at home in your own workshop.