This article
http://members.eaa.org/home/homebuilders/authors/alexander/Part%204%20Ba
sic%20Composite%20Construction.html has some very useful information
concerning wet lay-up temperatures.

Be careful with Localized Heating.  If the lay-up temp is increased
enough before the cure has advanced, little air bubbles can become very
large bubbles.  This is only evident with transparent fiberglass and not
carbon fiber.

Steve Colwell     Legacy