What happens if you crochet with the wrong size hook?
The hook that you choose, combined with the yarn and your tension, will impact the gauge of the piece. This, in turn, gives you the finished project size. If you choose the wrong crochet hook, you might end up with a sweater that is much smaller or larger than intended.
Does gauge matter for a blanket?
Note: Gauge is only critical for projects that require a certain fit like sweater, hats, mittens, etc. For projects with more flexible sizing like blankets, shawls, or scarves you do not need to be as conscious.
Why is my crochet blanket wavy?
Either it is too loose, so that whatever stitch you put into it pulls it out of shape, or it is too tight and pulls the other way. Or the chain itself can twist so you inadvertently put a curl into the project.
Does using a bigger crochet hook use less yarn?
If you are using the same pattern (same number of stitches and rows/rounds), a larger crochet hook will use up more yarn. If you are going for the same size of project (say a 36 by 36 inch blanket), a larger crochet hook will use up less yarn.
Is it better to go up or down a crochet hook size?
The reality is that the hook size is just a suggestion. Different crocheters will need to use different hook sizes depending on their tension. Someone who crochets very loose will need to use a smaller hook for the same project while someone who crochets tight will need to use a larger one.