I Embossed a 3mm 32mm Steel Coin from Both Sides. Dont take the Settings as scripture though, as I used the stock easyset Brass Setting and just turned down the speed a bit. It could probably be optimized for sharpness and detail. Feel free to do a remix with better settings.
I used the 3D File by Grafit https://www.printables.com/model/584132-terminator-t-800-memorial-coin
and the workflow from the youtube video to convert the STL into a genuine depth map.
Load up the .xcs and scale, as well as center the design onto your coin. Double check the position with the framing feature. Process and Start the Embossment.
Flip the coin (be carefull, it may be hot) go to Canvas 2 and repeat the same process for the Backside of the Coin.
The Steel oxidized heavily, so I spent quite some time removing it with wire brushes and a dremel.