1.- INTRODUCTION

What does it take to print a document? A file with the document that we want to print, paper to print the document and a printer. Well, something similar happens to 3D printing. A 3D printer is required, an electronic file that like text documents must be created by a suitable program and a material with which to print.

In this unit we will be studying each one of the precise elements to obtain the 3D pieces.

We'll start with the paper. That is to say with the materials by which the pieces are obtained. If you consider that in a simplified way a 3D piece is obtained by superimposing on the plane Z-axis in which the contours of the pieces have been drawn. What makes our printer is to put points that when joining give rise to lines. These points are achieved by means of an extruder. Technologically only metals and plastics can be shaped by extrusion. It is clear that the temperatures required in the case of metals are much higher than those of plastics. But........... what is a plastic?. I hope this video can answer that question.





ACTIVITIES

Do a search on the INTERNET about 3D pinting. Look for the material that you usually can use in this process. Compare mechanical properties, uses, density, chemical composition and toxicity. Do a presentation the al least 2 minutes.