Matthias Schwar
Jackstone_CP
CP of my Jackstone-modification. Also discovered by John Montroll and Sy Chen. Mountain folds are red, valley folds are blue and reference lines black.
For those who actually want to give this a try, here are some hints:
The frame as indicaded by the black lines is 0.085786 times the side length of the square. I recommend to use the Reference Finder by Robert J. Lang to find this distance. The central square is divided into 16 smaller ones.
Keeping the frame folded, the central square is collapsed into a preliminary fold, making it easy to precrease the 22.5º angle bisectors.
The final model can be collapsed in 2 ways: Like Skillman's version (some additional intermediate creases are needed) or working in 3D from the beginning to the end.
Jackstone_CP
CP of my Jackstone-modification. Also discovered by John Montroll and Sy Chen. Mountain folds are red, valley folds are blue and reference lines black.
For those who actually want to give this a try, here are some hints:
The frame as indicaded by the black lines is 0.085786 times the side length of the square. I recommend to use the Reference Finder by Robert J. Lang to find this distance. The central square is divided into 16 smaller ones.
Keeping the frame folded, the central square is collapsed into a preliminary fold, making it easy to precrease the 22.5º angle bisectors.
The final model can be collapsed in 2 ways: Like Skillman's version (some additional intermediate creases are needed) or working in 3D from the beginning to the end.