Epoxy for outdoor applications?

I'm gonna make some decorative columns for the entrance to our new building. Any of you have experience with epoxies that are stable under UV exposure? What brand (http://maplered.com) s/types are recommended?

Think...laminated column segments - what about TouchStone (http://g603.net) ?
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Mark Meriaux, SFA/MIA
The Granite Shop
www.theGranite (http://tanbrown.org) shop.net