As chance would have it, there is an article on rapid mfg in this month's SME magazine (Manufacturing Engineering)... they mention POM notably. For anyone interested in more on the subject here's the link:
http://www.sme.org/cgi-bin/get-mag.pl?& ... ARTME&SME&
It mostly focus' on the metalic processes (rather than plastic), and there's some interesting speculation on where the industry is heading.
Pete