Blacksmith3d http://www.blacksmith3d.com/ has a 3D paint program that loads CR2/OBJs directly and it's free. You just have to download the demo version of the Blacksmith3D Suite to get it. It's a very functional program and I find it quite user friendly after after getting over a few bumps.
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I don't fear God anymore. Anything he/she can do to me now is only adding insult to injury!