Unfolder

Manual guidance

Unfolder normally unfolds meshes automatically, but you can also show Unfolder how you want your mesh unfolded. First go into vertex-paint and paint your mesh to indicate which areas of the surface you would like to be traversed first. Faces will be visited in order of darkness (was brightness).

The great Blender with it's lovely, simple, non-overlapping interface

Vertex-paint your mesh to indicate order of unfolding

The great Blender with it's lovely, simple, non-overlapping interface

Select 'brightest' and click unfold

Select 'brightest' from the Unfolder options. Unfolder will unfold your mesh by visiting the darker areas first.

Seams

Unfolder will stop at any seams (edit-mode, edge-select, ctrl-e > mark seam) your mesh includes. Be careful because too many restrictions imposed by seams will result in incomplete nets. You can use seams to reserve edges of your mesh as cuts in the resulting net.

The great Blender with it's lovely, simple, non-overlapping interface

Add seams where you want cuts (a bit confusing yes!)

Chadwick 2006