I've had a request to run a Twill WAL starting in March/April time, as this would require two heddles of the same dpi.
We have three already.
Here's what you will need to gather for the project.
2 heddles that are the same dpi.
Determining what dpi you need:
Choose your yarn, cotton or another non-sticky yarn is ideal, though I've been working with wool and can give you some tips if you choose a wool. You will want a fairly thing yarn, calculate or reference the epi that is recommended for a twill weave. I find Halyon Yarn to be invaluable for this. All their yarns give you recommended tabby and twill setts.
Now the slightly tricky bit, you need a heddle that is .75 that epi. Weaving a twill on 2 heddles increases the epi by 1.5
Twills work really well with stripes, both int he warp and the weft. If you're feeling brave you could try a colour gamp or a tartan!
Please feel free to ask what questions this may bring!