DT Revision Extras

DT Revision Extras

1. Design Questions

   • For things that turn
     • Bearings
     • Nylon
   • Things that need to Adjust
     • Pin and Hole

2. Product analysis

   • Research
     • What something looks like
       • Whats most popular
       • Cost
       • Customers
     • Primary
       • Questionaires
     • Secondary
       • Internet

3. Specification

   • List of objectives a product must meet
   • Function
     • Target Market
       • Cost
         • Manufacturing
           • Environment
             • Safety
               • Durability
                 • Aethetics
   • Ergonomics
     • Relationship between the product and the user
   • Anthropometrics
     • Sizes of adults
       • Adult Data book

4. Large Scale production is cheaper because of Economy of Scale

5. Increase= A-B= C/A X 100

6. HOW TO DRAW: KNOCK DOWN FITTINGS, CORNER BLOCK

7. Pop Rivets

   • Permenant
   • Made from aluminium
   • For joining metals

8. Machine Screws

   • Thread goes up to head

9. Bolts

   • Gap between thread and head

10. Testing a product

    • Questionnaires/ Surveys
    • Use the product

11. Deforming Metal

    • Quenching
    • Hardening
    • Soldering

12. Plastics

    • Line bending
    • Vacuum Forming
    • Compression Moulding
    • Press Moulding
    • Blow Moulding
    • Injection Moulding

13. Woods

    • Laminating
      • Thin sheets of wood glued together
        • Bent into shape
    • PVA Glue to Wood
    • Epoxy Resin to metals

14. Drilling- PILOT, CLEARENCE, COUNTERSUNK