Seven-Color Torus (Ungar-Leech Map)
by Susan Goldstine, Sophie Sommer, and Ellie Baker
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Crafting Conundrums: Puzzles and Patterns for the Bead Crochet Artist
> Seven-Color Torus (Ungar-Leech Map)
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© Ellie Baker and Susan Goldstine
![](https://images4-g.ravelrycache.com/uploads/sgoldstine/323050281/Seven-color-torus-ungar-leech-map-1-IMG_5453_2_small2.jpg)
© Susan Goldstine, Sophie Sommer, and Ellie Baker
Seven-Color Torus (Ungar-Leech Map)
A slip-stitch bead crochet rope bracelet depicting a seven-color map on a torus (a donut shape). The design demonstrates the unusual property that each of the seven colors touches all of the others, which is impossible on a simpler surface like a sphere.
Beads used: seven colors of size 11 seed beads.
Thread used: Heavy duty topstitching thread.
About this pattern
![](https://images4-f.ravelrycache.com/uploads/nobody/280982642/51hj53csmtl_square.jpg)
- First published: December 2014
- Page created: September 3, 2015
- Last updated: September 3, 2015 …
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