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WITH LIGHTWEIGHT POLYURETHANE MODEL BOARD EMPLATE
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The design of a small handheld device is shown opposite.
Describe how it could be ‘block’ modelled’, as the next stage of the design process.
|SELECTED MATERIAL: Low Density Polyurethane Model Board|
|MATERIAL PROPERTIES: Lightweight polyurethane model board, is ideal for cutting and shaping by hand. It has a smoother surface finish than styrofoam as its granular form is finer. It can be shaped quickly using basic hand tools or even machines. It is supplied in a range of sizes and thicknesses.|
|A block of low density polyurethane model board is cut to a suitable size, using hand tools (coping saw) or a fretsaw.|
|The outer shape of the model is cut using a fretsaw or hot wire cutter. Care is required because polyurethane model board cuts very easily. Cut very slowly, as the material offers very little resistance.|
|The outer shape is carefully filed, to remove rough edges and to ‘round’ corners.|
|Use wet and dry to smooth the edges, ready for painting.|
|Using acrylic / water based paint, add the detail to the polyurethane model board.|
|The add a printout of a speaker and glue in position with PVA.|
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