We use a photopolymer to create a model from which we cast pieces in
sterling or for a "gold" color we use brass. This link shows step by
step how we created custom buttons for a customer.
This technique could easily be adapted to create tags. The size
would be the limiting factor. The photopolymers we use to create the
model can produce type 2mm in height. The 1 in 2014 is 2mm high in
the attached picture. On our operations page there is a link to "U.
S. Navy Challenge Coin" which is a pdf document. Pages 95,96,100,and
107 show examples of the 2mm letters we were able to cast. I can't
help with the gold fill, only "gold" in color like I said at the
beginning. Hopefully you will get some ideas from our work.
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