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Mr Barrett: Oh. I didn't know that.
Evan: The water's obviously concentrated into a very fine jet. Depending on how it's set up, it
can take out less than a tenth of a millimetre, sometimes.
Mr Barrett: Really?

c Complete the following extracts from the conversation by underlining the correct
phrases.

1 So they are especially good when / not so good when you have intricate shapes.
2 Saw blades are obviously perfect when / useless when you're cutting curved shapes.
3 ... sawing is the ideal solution / not the best solution if you want to avoid altering the
material.
4 ... it's ideal for / totally unsuitable for metals.

8 In pairs, assess the different cutting techniques in terms of
• shape/size of cut • material types/characteristics • cut width/quality.
Use the phrases in the box.
ideal/perfect/especially good for + -ing the ideal/perfect solution for
not particularly suitable / not so good if you need ...
not the best solution if you don't want... totally unsuitable / useless

Cutting techniques Shape/size of cut
drilling with a bit angular blind holes curved large small straight thick
drilling with a hole- thin through holes
saw
flame-cutting
grinding
Material types/characteristics
guillotining
ceramics metals plastics timber hard tough
milling
brittle
punching
sawing
waterjet cutting

Cut width/quality
heat-affected zone narrow kerfs no kerf rough edges
smooth edges wide kerfs

III Explaining jointing and fixing techniques

9 In pairs, think of some examples of ways of joining materials together.
10 a ► 3.8 Pedro, a purchasing manager with a kitchen appliance manufacturer, is talking
to Alicia, a sales manager from one of their main suppliers. Read the conversation and
answer the following questions.
1 What objective does Pedro describe regarding his company’s relationship with suppliers?
2 What is Alicia concerned about?
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