I’m posting this every where I can in the hopes that someone more experienced than me will answer my questions. I’ve scoured my weaving books and the internet for how to create a 2/1 twill on 2 heddles. This is a simple 3 harness pattern, but every time I think I’ve got it down, I seem to just confuse myself. I should probably just jump in and finish warping my loom and see what happens, but I’m terrified of doing it wrong!
I’ve got the basic concept down I need:
a thread that goes through the back slot and the front hole
a thread that goes through the back hole and the front slot
a thread that goes through both slots.
I even know how to manipulate or “treadle” the heddles once the warp is done. Here’s my problem I have a thread that my sources say should be sett between 12 and 18 epi for a twill pattern. I have 8 epi heddles and 2 10 epi heddles. I understand if I used the normal threading for two heddle I get twice the density, but it look to me like this isn’t exactly the normal 2 heddle tie up. So I have 2 questions.
1) when threading the back heddle do I need 2 or 3 threads per slot initially?
2) what will my epi be 1.5 times the heddles epi or 2 times or somewhere in between? Thanks for any help that can be given!
Thanks to anyone who reads my blog and can answer this question! 
Hi J! Have a look at my post here. I think this diagram will help, especially. Your final epi is 1.5 times that of the heddles you use, so if you use the 10dpi heddles, you’ll end up at 15epi. Thread two threads through each slot in the back heddle, and one thread through each hole. The same in the front heddle: two threads per slot, and one per hole. Making sure, of course, that the ‘back hole’ threads become ‘front slot’ threads, and one of the ‘back slot’ threads from each pair becomes the ‘front hole’ thread!
Have fun!
Cool! Thanks I think I’ve got my mind wrapped around this now! Fortunately I’m only half way through the back heddle, so I don’t have much to redo. I also have to figure out how wide it will actually be and recenter it in the heddle!
Would you believe that when threading the back heddle I noticed that I had the red stripe in the compulete and utterly wrong place! I threaded it in the heddle in the right spot and will just roll the threads onto the front bar, slide the threads off the back bar and back on in the right order then roll it all back onto the back bar. It means I’ll have a lot of paper prepared for that back bar!
Thanks again for your help!