Filigree Raw Brass Stampings Oval Setting gluing flatback

by Lenore
(boston ma)

I was working on making some costume pieces and I have these lovely Filigree Raw Brass Stampings Settings..


I have tried to glue flatback stones onto them and some pieces stay and some won't stay. I am using a jewelry bonding glue that proclaims anything will stick but no matter what I use the stones fall off. What do I do? Is there something else I can use?