I wove and I wove, until I felt I should weave no more.....the sheds that the shafts created when the treadles were stepped on were getting narrower and narrower. I stopped when the lease sticks were almost touching the back shaft.
The resulting Jazz Strings runner/rug ended up being a nice long 9' x 32" and truly feels like Berber carpet. I was also surprised to see that there didn't seem to be any take up in the width of the rug. I planned for a 32" and that is what it measured when off the loom and out of tension. Unfortunately, I didn't measure the length as I wove, so I don't know how much length was lost due to tension, but I will keep track of that next time.