Rapid prototyping technologies have introduced a new generation of rapid to
oling processes. Many of these rapid tools have been used for injection mou
lding where the thermal properties of the tool material are critical to the
quality of parts produced. Rapid tools are often made from materials with
substantially different thermal properties than conventional metal tools. E
ngineers wishing to make use of these technologies to produce technical pro
totypes must be aware of the effect this will have on final part properties
. Some previous research has been undertaken in this area. Reviews the work
done in the field of rapid tooling used for injection moulding. The review
shows that, whereas a range of techniques and final part materials has bee
n studied, the results obtained are incomplete and often unexplained. The a
uthors draw conclusions as to why this is so and go on to identify areas fo
r further work that will be pursued.