Rapid prototyping refers to a modelling process that can fabricate a physical scale model using three-dimensional CAD data. What is commonly considered to be the first rapid prototyping technique, stereolithography, was developed in 1986 by 3D Systems (based in Valencia, CA, USA).
Rapid prototyping is also referred to as solid free-form manufacturing, computer automated manufacturing and layered manufacturing. All four labels essentially refer to the same workflow; a computer is connected to machinery that interprets the data and creates the three-dimensional model. The model is then produced by the machine using layers of paper, plastic or other materials. Rapid prototyping means that the exact same model exists in both virtual (CAD) and physical form.
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CAD software |
To make a CAD model effectively, it is useful to have access to a range of different pieces of software.
CAD software can be broadly categorised as programs that offer the functionality to create two-dimensional drawings, three-dimensional models and hybrids that produce both.
When using CAD software it is important to experiment with different applications as each will have varying advantages, from sophisticated film and editing possibilities to rendering packages that produce realistic impressions of any building material. Most drawing packages are constantly updated and reissued as new versions of the programme, offering improved tools and associated facilities. Over the last few years advances in CAD software functionality has created the possibility for impressively realistic models.