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MODEL MAKING - YOUR SELECTED DESIGN FOR FURTHER DEVELOPMENT

V. Ryan © 2017

Select one of your ideas, one your consider at this point to be your favourite. Make a model using simple materials such as card and styrofoam. Drawing pins, split pins and lollipop sticks may also be useful.

 

SKETCHES AND CAD
If you have access to computers and CASD software, as an exercise, produce a CAD drawing of your selected design.

The chair below folds into a cuboid shape, as seen in the CAd drawing. It can be placed in the back of a car for transport, as it is a regular shape. It has two comfortable cushions and the seating positioned has been determined to meet ergonomic demands.

 
 
 
 
MAKE A MODEL
The card and styrofoam model shown below, helped to determine the proportions of the chair and also the folding mechanism. Without a scaled model, testing the folding mechanism would have been difficult.
 
 
 
 
MANUFACTURE (NOT REQUIRED FOR EXAMINATION WORK

Usually, a series of models are made as one way of developing the design.

Below, is the final manufactured chair. A mixture of ash for the back rest, legs and arm rests. Plywood was used for the main seat frame.

Two brass rotating joints for the back rest and four aluminium rotating joints for the legs (all manufactured on a centre lathe).

IN MOST DESIGN AND TECHNOLOGY EXAMINATION WORK, MODEL MAKING IS THE FINAL STAGE
The final chair is shown here, for those students who will be making a chair as a final project, from design to model making to final outcome.

 
 
 
 
 
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