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Here is the next part of Bill’s video. BEFORE you watch it look at the transcript below the video.
The prepositions have been removed from the text. Can you complete any of the gaps before you watch? Some of the gaps are dependent prepositions, that is they accompany certain words like some adjectives. Other prepositions you may be able to guess from the context.
When you have completed the task watch the video for the first time, try to listen for the prepositions.
Watch the video a second time, try to check the answers you have already given and complete the gaps you did not complete the first time.
If you need to watch the video a third or fourth time that’s fine, the more times you watch it the more you will learn.
The prepositions you need are :-
The can begins this disk —called a “blank”— punched an aluminum sheet about three-tenths a mm thick. The first step starts a “drawing die,” which sits the blank and then a “blank holder” that rests top.
We’ll look a slice the die so we can see what’s happening. A cylindrical punch presses down the die, forming the blank a cup. This process is called “drawing.”
This cup is about 88 mm diameter—larger than the final can — so it’s re-drawn.
That process starts this wide cup, and uses another cylindrical punch, and a “redrawing die.”
The punch presses the cup the redrawing die and transforms it a cup a narrower diameter, which is a bit taller. This redrawn cup is now the final diameter the can—65 mm—but it’s not yet tall enough. A punch pushes this redrawn cup an ironing ring. The cup stays the same diameter, it becomes taller and the walls thinner.
If we watch this process again close, you see the initial thick wall, and then the thinner wall it’s ironed. Ironing occurs three stages, each progressively making the walls thinner and the can taller.