About this 3D model

Continuing my project of printing puzzle maps of all countries on Earth, this time I printed Central America. I chose it for having few pieces, so I could quickly test the new method I came up with. I prepared a tutorial explaining how I made the puzzle in case someone wants to design their own. Here it is:http://myshumi.net/2011/08/29/3d-printable-puzzle-tutorial/ Suggestions are appreciated ^^ South Americahttp://www.thingiverse.com/thing:11084 Africahttp://www.thingiverse.com/thing:11159 Europehttp://www.thingiverse.com/thing:11216