Often I see an afghan pattern the dimensions of which I wish to change. Is there a formula to figure out I'll need "a multiple of X + #" chains to increase or decrease the overall size of the project?
More than a newbie, less than an expert...
Military wife, mom of 2 squirrely girlies
It would depend on the type of stitch pattern the afghan is in. If you work up a gauge swatch, you should be able to see how many foundation chains are needed per pattern stitch. There are books available full of different crochet stitches that spell out how many foundation chs + X you need per pattern stitch. If you have a specific pattern stitch you're working with now, let me know and I'll see what my books say.
Oh, why didn't I think of this Makes perfect sense. That's why I love forums. :)