Follow our instructions to find out how to fold a very easy ... to make a boat-shaped flap. 8. Fold down the corners of the boat-shaped flap so they meet in the middle. 9. To make the frog's legs, ...

Judging from the paper, they import a standard 3D model, simplify its mesh, unfold the mesh, and then make particular fold lines. The results are pretty impressive. Printing is really becoming ...