[This site of the late Ron Resch was restored by Mitya Miller from the web fetch copy provided by Erik Demaine, with permission from his son Yon Resch and guidance provided by Robert J. Lang. If you spot any missing or broken links or images, please report them.]
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Tetra-Ball_No.28_Red_SEP-73H2_1024_Crop.jpg

The Ron Resch "Tetra-Ball" module is a folded, curved score line unit that is folded from one sheet. The free edges are jointed together to form a completely enclosed sculpted space. The geometric definition for the 3D folded edges and their associated developable surfaces for the assembled 4 units is derived from the inscribed circles in the faces of a regular tetrahedron. This unit was also used in one of Resch's visual screens called The Tetra-Ball Screen. This work was started in the 60's and continued into the 70's.

Tetra-Ball_No.28_Red_SEP-73H2_1024_Crop.jpg
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