I sculpted a 7″ tall model of a Skane style Mjolnir out of polymer clay the other day. There are too many undercuts in it to duplicate using the sand casting technique, so I will be making an RTV silicone mold and casting it in resin.
I am planning on finishing it to look like either silver or bronze, and possibly, maybe, stone. It’s going to be flat on the back with a hanger to mount it on the wall.
The resin and mold-making material is on its way. I should be able to start producing these in a few weeks.