A couple of posts ago, I said that I had tried and failed to do warp-shaping on a sprang warp. I did figure it out. Unfortunately, I did my warp calculations based on plain interlinking but did a pattern of holes all over, the Haraldskaer pattern. Holes expand more than plain interlinking. The bag came out much too wide and much too short, so it doesn't function as a bag. I did multiple thread interlinking on the handles to draw in the fabric and that part biased badly. The finished object is not good for much except to serve as a horrible example.
I am still sad about wasting a good skein of linen-cotton yarn.
The bone darning needle shown in the photo is from WoodwindSilverstone on Etsy. It has a nice sharp tip.
You may not be a weaver and be wondering what I mean when I say warp calculations. On a loom, for weaving or for sprang, there are threads that go lengthwise and are secured at either end. The threads sit side by side. So you have length, and you have width with so many ends per inch. On a loom for weaving, the threads sit a little bit apart from each other so that they are spaced properly through the reed. The reed is part of the loom, in the front. The reed separates the threads and you use it to beat the cloth to make the fabric construction consistent after you pass a weft thread right to left or left to right through the shed. You create the shed by raising some of the threads while others stay lowered. In sprang there is no weft and no reed, and when warping you can space the threads as tightly as you like as long as they don't get out of order. For either weaving or sprang, you want know the length of your warp, the number of ends per inch, the width of the fabric you want to make, the way the fabric will change when it comes off the loom and gets washed, and the kind of yarn you want to use. When you know these things, you can figure out how much yarn goes on the loom and thus to figure out how much yarn to buy or how much yarn to spin.
The wrinkle with sprang is that, compared to weaving, the fabric changes a lot when it comes off the loom. With plain interlinking, I generally expect that the fabric will be about thirty percent wider and thirty percent shorter when it comes off the loom. I was not expecting the fabric to be more than a hundred percent wider, as it was with the lacy market bag.