A proposal for the teaching of 3D printing technologies based on the teaching for understanding framework

3D printing is a revolutionary technology, it allows to reproduce pieces of very diverse nature. That is very useful for a wide spectrum of professionals, artists and entrepreneurs. The training and teaching of these technologies represents a great challenge. It implies to satisfy the expectations of a great variety of people with different interests of use. In this article, the Teaching for Understanding is used to planning a course of Introduction to 3D Printing Technologies.