copper washers and cotter pins work great, and binding wire is
quintessential…I use (Ti) binding wire when its absolutelly
necessary to hold something with more than two parts together. I
also stay away from paste flux prefering borax cones ground with
water ( to the consistency of thick /top milk) or a "self pickling"
type flux like Battern’s or Pripps,depending on what I am working
with ( what colour of gold) or for fine silver Cupronil can’t be beat
as its an anti-firescale and flux in one.