On Wed, 20 Aug 2008 11:30:26 -0700 (PDT), "Denis G."
wrote:

Probably this answer is more in the category of "misc. ramblings", but
could you use cooling from a stream of gas (CO2 or liquid N2) to cool
the plastic.

Or this:
http://www.vortec.com/cold_air_guns.php

--
Ned Simmons