This was a wedding gift for my friends tyee and OJ. *

This is the "double twist graft" pattern described by Chris Palmer in BARF 1995 (?). It consists of an open-back-1 twist octagon on top of a closed-back twist. *

This gives a better sense of the contrast in this piece when it's strongly backlit.
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This pattern is due to Shuzo Fujimoto. It's based on 6.3.6.3. *

This is a variety of patterns based on open-back-I twist octagons. There's more contrast between foreground and background. I need to put in a new picture.
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Detail of the twist octagons *

More detail *

This is 6.4.3.4 with three levels of recursion. One level yields 1 twist in each cell. Two levels yield 3. Three levels yield 5 twists on a side.
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A closer view of 6.4.3.4, level 3

A modular star that my friend Kirsti taught me over the phone one afternoon *

The front (or back) of one of the stars from Tomoko Fuse's Spirals II *

The back (or front) of one of the stars from Tomoko Fuse's Spirals II *