Rapid prototyping is the method of constructing
physical objects using solid freeform fabrication. The use of rapid
prototyping techniques had its start during the 1980's where it was
used to build product models. Its current applications have been put
into use in a wider range of objectives.
The technique can even
be used in order to manufacture quality useable parts in small numbers.
Rapid prototyping has even found some applications in the art scene
where sculptors use the technology to create intricate shapes that
become art pieces.
An improved digital rapid prototyping system
makes use of computers in order to create highly accurate design
pieces. A digital rapid prototyping system makes use of virtual designs
usually created with the help of computer aided design or animation
modeling software programs.
The system then transforms the design
into virtual cross sections which a special machine uses to recreate
the exact design cross sections in physical space until a physical
model is finished. The highly technical process enables virtual designs
to take physical shape in very exact and accurate manner.
In
rapid prototyping, there are usually two basic approaches to design
systems being used. The approach chosen can either be formative or
summative. The formative approach is being used for situations wherein
the prototype is first built based on the current stage of the design.
It is then tested on a control group with the results being used to
integrate into the next stage of development in order to further
enhance and improve on the usefulness of the current design.
The
summative approach on the other hand takes a different course in
developing product design. A single test exercise is performed at the
end of the overall design enhancing process. At most times the approach
is a two step stage. Following the summative approach can sometimes
make it too costly to make design changes as the end stage nears.
But
this approach is less time consuming and can be more cost effective
initially if the projected design is seen to require little refinements
when a prototype is done. But in the long run, using the formative
approach will definitely be more beneficial. The main reason for this
is because when a system is tested as a whole only once at the end of
the design period, it may be very difficult to pin point the various
flaws that may exist within the design.
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