Well, I plied the two spindles just for fun to see how it works. I plied the thread from one spindle with some commercial silk thread and then plied it with itself which means, I got a 4ply cabled yarn now. And I did the same with the other spindle.
I still have like tons (actually it's about 10 oz) of this cashmere and in the end I will have a lot of very, very, very thin yarn. This was not what I signed up for. What now? What do I with very, very, very thin cashmere/silk yarn? I don't knit lace. (Imagine her voice raising a bit in desperation.)
But it's so lovely and soft, she said in a dreamy voice. And much too wonderful just to be admired. Get over myself and begin knitting lace? Well, at least the spinning is relaxing and rather nice.