FlatFab is described as 'Flatfab is software that helps you design and fabricate 3D objects. We imagine in 3D but ideate and draw in 2D. flatfab seamlessly does both' and is an app. There are three alternatives to FlatFab for Windows, Linux and Mac. The best FlatFab alternative is Pepakura Designer. It's not free, so if you're looking for a free alternative, you could try DXF2papercraft.
Pepakura Designer allows you to easily create papercraft models from 3D data you create from your favorite 3D software. The save and export functions are disabled before registering. Otherwise all functions work without limitation in the shareware version.
DXF2papercraft converts a polygonal 3D model stored as DXF file into a plain drawing in the form of a 2D DXF file. This requires to 'unfold' the model. The result is a flattened pattern of connected polygons.
UNFOLD3D is today the preferred unwrapping tool used by major studios producing games and animation, but also by many independent artists. Polygonal Design, creator of UNFOLD3D technology, is recognized by many artists as the most efficient unfolding tool in the world.
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