MODELLING+DETAILS



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MODELLING DETAILS.__
 * There are many different ways in which realistic finishes can be simulated using a wide variety of everyday materials. It is important to use your imagination to achieve an end result that creates an effective model. Listed below are a range of ideas for producing convincing finishes.**

Textures can be created by applying wet and dry abrasive paper to a model. This is useful for products that have to be gripped. This type of surface is often seen in injection-moulded products. Cut out the shape required and then glue it in position. When the model is sprayed with paint, the texture blends into the surface.

Fabric such as cotton can be stuck to a timber base and then sprayed with aluminium paint to simulate a metal casting.

Rubberised paint is available which can be applied to a timber or MDF base by brushing. This will give the impression of a rubber model or component.

A range of pastes are available that come in different finishes, some metallic such as brass or copper. These can be applied to almost any base material and when polished give the impression of a metal product.

When making architectural models, concrete can be simulated by mixing sand with PVA wood glue. When it sets, it will give a realistic impression of the building material.

Components of the same form can be replicated in a similar way by making one of them and then taking a **mould** from it. This mould can be made by either vacuum forming, using silicone, plaster or casting sand. When the mould has been created, it can be filled with car-body filler or casting resin to make the component. Many components can be taken off a single mould. Silicone moulds can be taken from components and then filled with resin to create replicas of the original.

Foam can be stuck underneath buttons to simulate the effect of it working when pressed.


 * A range of everyday objects and materials can be used either directly onto a solid block model or on a mould which is then used in vacuum forming.**

Small buttons can be made from sweets or pills.

Wire and string can be applied to models to achive a ribbed effect.

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