English Unlimited HTL 4/5, Schulbuch mit Audio-CD und CD-ROM

76 Production and industry 06 LANGUAGE SKILLS EXPLORE EXTRAS First of all, … 3D printing 3D printing noun a manufacturing process for making a physical object from a three-dimensional digital model. To print a 3D object, the manufacturer uses a 3D computer-aided design (CAD) program to create a digital model that gets sliced into very thin cross-sections called ‘layers’. During the printing process, the 3D printer starts at the bottom of the design and builds up successive layers of material until the object is finished. Look at the expressions Brian uses to organise his description of the book-making process. Copy headings 1–5 into your exercise book and add the expressions in the box below to the correct groups. 1 Opening 2 Linking 3 Referring forward 4 Referring back 5 Closing First of all, … The next step is … What happens next is … I’ll come back to that later. You remember I told you about … ? And that’s the whole process. To start off, …  After that, …  And that’s it.  Earlier I mentioned …  To begin with, … Following that, …  I’ll explain that in a minute.  Once that’s done, …  The first thing is, … LanguagE FOCuS 7 Organising a description Look at the pictures. How do you think these things might be made? Work in three groups. Read the information and follow the instructions. Group A – read about making Maldon salt on p. 199. Group B – read about making glass bottles on p. 201. Group C – read about making axes on p. 203. In A/B/C groups, give each other your tours. Ask questions to make sure you understand the process. Go back to your group. How much can you remember about the process you heard about? a SpEaKIng 8 Maldon salt glass bottles axes b c d One highly advanced production process is 3D printing, which is also known as ‘additive manufacturing’. Do you know why? Talk in pairs. Read the definition to check. Were your ideas correct? Look at the objects below. 1 Can all of them be produced with 3D printers? 2 What materials can / can’t be used? 3 What designs are / aren’t possible? a SpEaKIng 9 b 10 Nur zu Prüfzwecken – Eigentum des Verlags öbv