product design revision

product design revision

1. mechanisms

   • a system of parts working together in a machine; a piece of machinery.

2. wood joints

   • butt
     • A miter joint is a butt joint which has been cut at an angle of 45 degrees. The same class of joint may be used on angles grether or less than 90 degrees
   • dowel
     • A dowel is a cylindrical rod, usually made from wood, plastic, or metal. In its original manufactured form, a dowel is called a dowel rod. Dowel rods are often cut into short lengths called dowel pins.
   • lap
     • a joint made by halving the thickness of each member at the joint and fitting them together.
   • housing
   • mitre
   • mortise and tennon
   • dovetail
     • The 'DOVETAIL JOINT' is very strong because of the way the 'tails' and 'pins' are shaped. This makes it difficult to pull the joint apart and virtually impossible

3. stock form

   • planks
   • sheets
   • moulds

4. manufactoring methods

   • casting
     • Molten metal before casting. Casting iron in a sand mold. An investment-cast valve cover. The permanent molding process. Intermediate cooling rates from melt result in a dendritic microstructure. ... A simple gating system for a horizontal parting mold. Different types of risers.
   • moulding
   • forming
   • joining
   • addictive manurfacturing

5. materials in general

   • wood
   • metals
   • plastics
   • textiles

6. timber (man made)

   • block board
   • chip board
   • plywood

7. Enviromental issues

   • Environmental Concerns. ... The environmental problems like global warming, acid rain, air pollution, urban sprawl, waste disposal, ozone layer depletion, water pollution, climate change and many more affect every human, animal and nation on this planet.
   • Environmental Concerns. ... The environmental problems like global warming, acid rain, air pollution, urban sprawl, waste disposal, ozone layer depletion, water pollution, climate change and many more affect every human, animal and nation on this planet.