Aeroclub has lycra thread, which isn't thread at all, just a strand of
suppose you super glue it in position, then it stetches so there is less
chance of breakage. It is about 0.1mm diameter (~.004 inch)
and Aeroclub also sell thin 'fishing line':
measures on my micrometer at 0.12 mm (0.005 inch)
Both products are clear, i have seen lycra in black though.
Seems you live in the UK, so it should be ez to get both to try out.
there is also motor armature wire that is super thin:
is used by model railroaders for lighting, but it is so tiny it could be
used for aerials: .0045 inch
Also on same page is 'super flexible' wire and the strands in that are only
: Any ideas on best "scale" stuff to use for aerial wire? Stretched sprue
: doesn't look right, human hair is in short supply nowadays, sewing
: thread looks too big, etc etc