Yes, both sides are identical. I engraved them on wood, dusted them with talcum powder and laid them into a box just a little bigger. Then I built a thin dam (plastalina modelling clay) around the edges of each coin (I did 2 at a time) to prevent the silicon from wicking under them. I then poured about an inch of silicon mold max 60 over the top and let it harden. Then I removed the silicon and the dam and dusted with talcum. After pouring an inch or so of silicon on top I separated the 2 halves, removed the wooden plugs and cut a channel for the pour and one for the air to escape (in a V shape to keep them apart) from one edge down to each coin . Of course when the metal coins are removed there is a bit of hack sawing and filing to get rid of the excess metal “sprues”. Then I lapped them on sand paper to smooth the surfaces a bit.
Oh, the metal I had on hand is tin.
7 Likes