The bit of dowel is a kebab skewer .
I put the small swivel into the “screw hole “ and drive (hammer) the dowel into the “wire hole” so that it jams one eye of the swivel, then just trim the surplus.
Good morning ,I have used tungsten throwaway turning tool tips that were used for machining metal , quite heavy and small.I do believe the material was used in early development of split shot.Reelmaker.
Not a fish was visible that first time I visited Beechmere; an utter
stillness brooded over the place and I felt the strange and sinister atmosphere which, so the story goes,
has been the cause of several suicides.’
BB – Confessions of a Carp Fisher