I use paintbrush fibers for legs of ants. In fact I have tied up "Purdy" ants for Rick's ant swap. I find that when I heat up a bodkin to form segments in the legs, that the Purdy brush fibers stand up to the heat and keep their form. Some really cheap paintbrushes I had, worked awful with the heat (not keeping their form or breaking). Also the Purdy brush fibers were more consistent fiber to fiber with proper taper.
Good Luck!! Thanks, Chris.
