Hi Cheri, I'm cutting and pasting the answer I gave you where you posted your question under Season 2: Episode 2 under the Introduction to Sample One. Maybe it's easier for you to find here..... The only other thing you need to take into account is how wide in the reed your item will be so you can first find the centre and then, from there find your right side starting point in your reed. The math is simple if you have a 12 dent reed and you want to sett at 24 epi. With other setts and reeds - it's easier to check on the chart that Jane provides.

Hi Cheri, you don’t need to do the math - you’ll find it all on Jane’s Reed Substitution Chart. If you are using a 12 dent reed and you are opening your sett up from 18 to 15 epi, you look at the column for your reed and find the 15 epi on the list and use the sleying listed in the far left column of the chart.

Thanks. I couldn't find your reply to my comment.
I guess I'm not understanding any of this. I do understand the reed substitution chart when I'm starting a project.

The project I'm doing is the dishtowels which were sett at 18 epi. Then Jane takes it to 12 epi. So, I just take one side of the warp and move it to where it would be if I was starting a new project at 12 epi? Won't that make it uneven in the reed? Or am I not explaining my problem correctly? Maybe I'll just do them all at 18 epi and then warp something new at 12.

I'm guessing you are doing Season 2 - Sample 3 - Parrot. It's such a fun project, don't give up on it - you'll get it. Sooooo - you are sett at 18 which is 18 1/2" wide (332 ends /18 epi = 18.44") and your reed is a 12 dent reed. Now, you want to open it up to 12 epi (332 ends /12 epi = 27.66" wide). From the middle point on your reed measure out 14" to the right and start sleying at 1 end per dent. When finished sleying, you'll have that project almost perfectly centred on your reed and ready for the fun of weaving the shawl without having to start a whole new warp! I'm hoping this explains what you are trying to understand!

I'm actually working on the first project, the dish towels (symmetry) but this does make sense to me. I figured it was something easy like that but I couldn't seem to wrap my brain around it. Thank you so much!

I'm planning on going from 18 epi to 12 epi by: Currently threaded 2,1,2,1, in a 12 dent reed.. I'll move to 1,1,1,1, .Cutting my work at the fell, leaving enough to handle moving the warp threads over to the 29" dent as I face the beater/reed. With my threading hook, I'll just move the threads over, so there's 1 thread per dent.