He tried a few techniques but ended up 3D printing in plastic then making a mold to create a wax copy for lost wax casting. The coolest
part is that he used a process called depletion gilding to give the gold a more yellow look. He thinks that is what the Etruscans likely did. Basically, you blast the object with a torch and then throw it in an acid bath. That causes the copper to rise to the surface a
bit. He did that a lot. This way the gold is strong and wearable at 18k but looks closer to 20k with that luscious yellow color. Lot’s of hand finishing too.
