3mm cotton yarn, 4 strand, 1 strand=0.75mm
1mm cotton string, 4 strand, 1 strand=0.25mm
(of course doubling over the 1mm string would work too. I'd advise to untwist the braid first though)
Using 1 strand of each equals 2mm. when doubled over
the folded piece on kanthal(used for threading the...