These notes summarise the entirety of the AQA Design and Technology AS/A Level textbook. They are easy to read and follow and contain all of the most important information in a clear and easy to read format.
Hand and commercial processing
Joining processes
Choosing a joining process
Material
Temporary or permanent joint
Strength required
Stiffness needed
Effect o joining method on material
Appearance
Wood and self-tapping screws (temporary)
These types o screws cut their own threads as they are screwed into the material. They are used in
metals i it is thick enough to create a thread.
Permanent joining methods
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