The Powder Mill Shawl begins with a garter-tab cast on and quickly grows to a full-size shawl! Â An easy cable pattern makes this a great place to learn cables, with or without a cable needle: Size: Yarn: Â skeins of Morehouse Merino Bulky Needles: Â US #10 1/2 or #11 or size to obtain gauge (use larger size if you’re a typical knitter) Our Powder Mill Shawl is shown in Moonlit and Chartreuse.