I am making this shawl, and am using Wool-Ease Chunky instead of the Homespun called for in the pattern (the boucle of the Homespun [in my opinion] looked sloppy to me when I tried a gauge swatch, so I wanted a smooth yarn rather than a textured one).
Since the Wool Ease Chunky is a bit thicker, I had to go with size 17 (12.75mm) needles to get gauge. So my question is, what size crochet hook will I need when I get to the trim part of the shawl? I tried figuring it out using proportions, and here's what I come up with:
The pattern calls for size 13 (9mm) needles and a size K-10.5 (6.5mm) crochet hook for the trim.
I used size 17 (12.75mm) needles, so I come up with needing a size M/N-13 (9mm) crochet hook. Is that right? I always second guess myself when it comes to math!