only use these strings, Thomastik: SuperFlexible / Rope Core
I started using when Kenny Baker put me on to them in the early 70's.
They are the only strings he uses no matter what you read elsewhere.
I have tried other strings, but these are it for fiddling. You have to be
careful when you order them too, I am always getting sent something
else in their place because Thomastik makes other similar strings.
I use Pirastro Oliv rosin. http://www.pirastro.com/homeset.html
and I use Blue String Bow Hair ordered longer than required and trimmed by
the bow worker to favor the dark hair: http://www.sowden.co.uk/bow-hair-1.htm