A second round of test spinning has happened, and now it's done and the yarns have had their hot bath and are drying, with a bit of weight to keep them stretched. Next step in the adventure will be to activate all my weaving skills and do a little bit of test weaving with the stronger-spun warp yarns, and see how the fibre combination we're planning to use will work.
You can see the difference in the amount of twist in the two skeins - the grey one is obviously contracting much more than the white one. Fascinating, isn't it?