Processing: Blanks would have been cut from a wire and then threaded using the process called thread rolling (rolling the blank against a die). Part 25 Washer – Material: Mild steel The price and malleability of mild steel makes it the most likely How Identification was made: choice, and the colour of the nuts further helps to identify the material. Alternative Materials: Stainless aluminum or medium carbon steel are all likely alternatives. Processing: A simple punch press cutting process would be used. Part 26 Rubber Cap – Material: Natural rubber How Identification was made: The resilience and high elasticity are properties of natural rubber, and the component also has a distinctive natural rubber smell. Alternative Materials: Other highly elastic rubbers such as natural latex rubber would have been suitable. Processing: This component was most likely produced by injection moulding (rubber forced by a ram into a mould cavity then cooled.) Part 27 Diode – The case is molded epoxy and the terminal is bright tin Material: How Identification was made: The diode is labeled as IN4007, and these are detailed as using these materials. Alternative Materials: A plastic such as polycarbonate have been used to the casing and another conductive metal such as brass could have been used for the terminal. Processing: This would be a complex production process due to the multiple smaller components where the diode is encased in the epoxy in an injection molding process. Part 28 Solder – Material: Tin and lead How Identification was made: The most likely solder used for this component is a soft solder, and these are made from these two metals.
Processing: Blanks would have been cut from a wire and then threaded using the process called thread rolling (rolling the blank against a die). Part 25 – Washer Material: Mild steel How Identification was made: The price and malleability of mild steel makes it the most likely choice, and the colour of the nuts further helps to identify the material. Alternative Materials: Stainless aluminum or medium carbon steel are all likely alternatives. Processing: A simple punch press cutting process would be used. Part 26 – Rubber Cap Material: Natural rubber How Identification was made: The resilience and high elasticity are properties of natural rubber, and the component also has a distinctive natural rubber smell. Alternative Materials: Other highly elastic rubbers such as natural latex rubber would have been suitable. Processing: This component was most likely produced by injection moulding (rubber forced by a ram into a mould cavity then cooled.) Part 27 – Diode Material: The case is molded epoxy and the terminal is bright tin How Identification was made: The diode is labeled as IN4007, and these are detailed as using these materials. Alternative Materials: A plastic such as polycarbonate have been used to the casing and another conductive metal such as brass could have been used for the terminal. Processing: This would be a complex production process due to the multiple smaller components where the diode is encased in the epoxy in an injection molding process. Part 28 – Solder Material: Tin and lead How Identification was made: The most likely solder used for this component is a soft solder, and these are made from these two metals.