Barnacules Nerdgasm used 3D printing medium with 80% bronze to make some physical bitcoins. The result was cool, but it got even cooler when he threw them in a rock tumbler.
Unlike those loud toy-like tumblers, he got a fancy Lortone model. It took some trial and error to get the look he wanted, but they ended up polishing up significantly when compared to the original BronzeFill. They had a nice patina to them once he found the right tumbling medium.
• Polishing 3D Printed Bronze w/ Rock Tumbler & Steel Pins (YouTube / Barnacules Nerdgasm)
