My friend Kathy was so intrigued by my sock knitting that I had to make her these crazy zig zag socks. She likes thicker socks, so I’ve used sport weight yarn – which knits up faster! Kathy even featured me knitting this sock in an artwork she created for my family.

Difficulty: intermediate
3mm needles
Yarn: sport weight (this is thicker than sock yarn, but thinner than double knitting yarn)
I’m sure you could use sock yarn and smaller needles and it should turn out fine.

From Blendy Knits Socks - the book and iPad App.