Some of you may think this is silly, but here goes:
For a couple of years, I've been doing a seasonal kit exchange with three other stitching girl friends. It's a lot of fun. A few times every year we each pick a small, generally ornament sized design. It's almost always a freebie. Then we stitch it for ourselves, (like stitching a model) and then we create three kits using those same materials and send them off to each other in the mail. It's cool to have three different small kits arrive in my mailbox at regular intervals. And when I need a quick finish, I have a box of them just waiting for me to start - threads, fabric and even sometimes finishing supplies all at my fingertips!
So here's the nit-picky part. Often we'll take a freebie that uses DMC and make some conversions to overdyeds or silks or whatever to make it more fun for our friends.
When I start stitching my kit, I buy all brand new skeins, because I like to measure my thread use and keep count of the yardage I'm using. That way I'm sure that I pack enough thread in the kits I send my friends. (It's embarrassing to send a kit with not enough thread!)
My last two kits have used Weeks Dye Works threads and after measuring, I've found that those 5-yard skeins? Well, they usually don't contain 5 yards. I used 8 different colors of WDW threads and the skeins are always short. Sometimes by maybe 6 inches. No biggie. But sometimes by 12-18 inches. Yes. 18 inches. One-half yard.
Unlike GAST, which comes separated into five 1-yard pieces, WDW is just one continuous length of thread, so unless you were measuring, you'd never notice. But now I've noticed.
So now you know, too. And if you're trying to estimate how many skeins of WDW thread you'll need for that gorgeous monochromatic sampler you're planning to stitch....well, you had better add a skein or two. Because my recent experience has made me think that you won't be getting 5 yards from those brand new skeins you just brought home.