You can try Pepakura Designer with no charge. Pepakura Designer allows you to create real paper craft models from digital data. Pepakura Designer features to automatically unfold 3D polygon-mesh models, and allow you to edit them. Pepakura Designer is a Windows application which makes unfolded patterns from 3D data. (The data exporting feature is activated with purchase of the license keycode. ) Note that Pepakura Designer does not have 3D data design features. You require 3D data before start.
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Pepakura Designer 4: Paper Craft Models CD Key, 2.54$
Pepakura Designer 5: Paper Craft Models CD Key, 5.03$