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Questions and Answers
Which material is commonly used for making patterns because it is easy to work with, but tends to warp?
Which material is commonly used for making patterns because it is easy to work with, but tends to warp?
- Metal
- Plastic
- Wood (correct)
- Casting
What is the main advantage of using a solid (one-piece) pattern?
What is the main advantage of using a solid (one-piece) pattern?
- It creates larger castings
- It is cheaper to construct (correct)
- It produces faster moulding process
- It is used for complex shapes
Why are patterns not made the exact size as the desired casting?
Why are patterns not made the exact size as the desired casting?
- To speed up the moulding process
- To reduce the cost of construction
- To produce undersize casting
- To account for shrinkage and machining allowances (correct)
Which material is more expensive to make patterns, but lasts much longer?
Which material is more expensive to make patterns, but lasts much longer?
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When are one-piece patterns generally used?
When are one-piece patterns generally used?
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