I'm glad everyone is so excited!
I will start a new thread for the next sweater! It will be easier to navigate, i think. Thanks for the suggestion!
Yarn amounts, yarn amounts.... I wasn't sure how to tackle this problem. I was going to suggest that you go to a yarn store, pick out 1 ball of a yarn you like, knit a swatch to determine gauge, then go back and buy more yarn after you determine how much you need. But, that leads to problems, biggest of all the store not having enough of the yarn you need, OR not of the same dyelots, and having to wait for orders yadda yadda..... Here's what I'd suggest instead:
Look at some patterns for tanks in your size. LOOK AT does not mean FOLLOW :-) Look at several patterns (
knittingpatterncentral is a good place to start for free patterns, and
Knitty has lots of tanks) and get a ballpark figure of how many yards you need. If it doesn't outright tell you that you need X number of yards, you can determine this by multiplying the number of balls of yard by their yardage (for instance, if it says you need 11 balls of yarn, and the yarn is 100 yards in a ball, you need 1100 yards of yarn). Then, buy that same number of yards in whatever yarn youwant to use. Look at SEVERAL patterns and get an average--it's usually better to over estimate, too, because you don't want to run out.
The XRX books "the knit stitch" "the purl stitch" and "color" AND the Knitters magazine that the patterns come from ALL have yardage amounts. If you don't own these books, scope them at your LYS, library, or borrow from a knitty friend :-)
You can also ask your LYS owner if they will A) let you return unused balls and/or B) hold a few extra balls in that dye lot for you in case you run out. My LYS is very accomodating in that respect.
I got a ball each of knitpicks cotton yarns (not the crayon though, blech), and I'm going to order one more of all their NEW yarns ASAFP, and then knit a swatch for all of them, and decide which one I like best, THEN order whatever amount of yarn I need. (this is the long draw out Hildie is anal retentive way of doing things) Your LYS might allow you to swatch a few of their cotton yarns before you decide what to buy. Just ask!
I was going to have a couple "rules" for this KAL, like you have to do some kind of bottom edge border, you need to use more than one color, some kind of texturized stitch pattern.... but I'm not sure if that will go over. Any of those things might effect how much yarn you need to buy, soooooo if anyone is opposed to THOSE specific things let me know now and I'll nix them. Or maybe I'll just make them suggestions instead of "rules" :-) I don't want to seem overbearing.....
yes cate you are cheating!

that's okay though... maybe you should be in charge! ;-) You don't have enough to do, right? Actually, though, that will be good, because this will be my first "design as you go" too (that i will finish anyway), and you'll be able to tell us what we're doing wrong
When the new thread is started, I'll (try to) merge everying from THIS thread that is relevant to THAT thread...
OH, and it doesn't HAVE to be cotton. If you find something esle that you like (a ribbon yarn might be neat) use it! I'm going with cotton because it's cool for summer time and washable. If youwant to make a wool summer tank top

go ahead... we won't want to be near you while you're wearing it, but hey, it's YOUR tank!
FINALLY, if you do use cotton, make sure it "works" with your needles... you might need to buy some aluminum needles if youdont' like how it feels with bamboo or casein or plastic or whatever you usually knit with.... If you're using cotton for this KAL and you haven't before, I would knit a bunch of swatches--it doesn't have to necessarily be with the exact yarn you're using for the tank (but for real practicing, it should be! either buy extra, or plan on unravelling), so you get used to how it feels and knits up. Cotton is kinf of unforgiving... shows all those little bumps and booboos and changes in gauge, so practicing is good!