If you are making metal hair sticks, try making rivets out of your
choice of tubing-brass, copper, silver-slice off 1/8-1/4" and set it
in the appropriate size drilled hole-punch it with a small dapping
punch(to just fit into the inside rim of the tube) and you have the
two peices cold joined-a large piece may need more than one rivet.
They can be very neat and clean if you debur the edges, etc.