I ordered some size 8/0 (0.5 mm diameter) knitting needles from Etsy just now. I’m really looking forward to trying them out on finer thread (#30?). The photos above are of a current miniature project, working with size 5/0 (1.0 mm diameter) steel needles using #10 thread. Now, if I could just find something like silk thread… I may have to make do with cotton for now.