Watch a Thai jewelry factory cast a .925 silver coin using the lost-wax method. Hot wax fills silicone molds, gets assembled onto a sprue tree, then molten silver replaces the wax. After casting, workers file, polish, and oxidize the coin to its final finish.
We're inside a jewelry factory in Thailand where they just created this silver coin by using a silicone mold which holds another mold which is made of wax, which was then turned into silver, polished, oxidized. This machine is filled with extremely hot wax and it's currently being injected into this mold. Now he's taking all the molds we just created and he's sticking them to a step. Everywhere there's wax, silver is going to replace it. The next step is to take the silver, fill it into here, and from there the silver is going to have replaced all of the wax that was on tree. They're going to wash off all of the remaining plaster, and when it was cut off the tree, it left behind this little stem here that now needs to be filed down so that the back is smooth and consistent like the rest. Now we're going to oxidize the coin. This is how we made a silver 925 coin
