What’s the best way to protect the inner and outer detail of my coin while I’m making it into a coin ring?
This is a question that I recently received from a customer of mine. There are some simple ways to protect your coin ring’s inner and outer detail while you’re forging it. In my own practice, I have 3 different tools that I can use when initially folding over, expanding, and then reducing the coin into a reduction die for final shaping:
The key to protecting the outer edges of the coin ring as you’re reducing it is to use some impact-resistant plastic tape, which works very well in that it provides a buffer between the edge of the coin and either the ram head on your ring sizing machine, the press arm on a shop press, or the square ram on a 1-ton arbor press.
The impact-resistant tape (shown by the red arrows below), is also great for covering the bare metal on the expanding splines of the ring-sizing machine. This acts as a barrier between the inner side of the coin that is making contact as you are expanding it down the splines; also leaving no marks, scratches, or marring; thus protecting the inner detail of the coin ring as a result. (See photo below:)
Below is an example of the crisp inner detail of a finished proof 1975 Half Dollar from the country of Belize that I recently made for a customer, using the impact-resistant tape and the plastic bearing balls.
If you use these simple tools, your coin rings will turn out with striking detail!
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