If kept covered, that should not have happened. I have had Aeropoxy for over a year and it was still usable. I suggest you go here: http://www.ptm-w.com/index.asp?pgid=15 and ask them.
See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2011 - KR Gathering in Mt. Vernon, Il - MVN There is a time for building and it never seems to end. Daniel R. Heath - Lexington, SC Can Aeropoxy, part A resin be rejuvenated if it has gelled