- You start with an original model (either out of wax or a metal model).
- Make a mold of that model.
- Inject that mold with hot wax to make replicas of the model.
- Put all the models onto a 'tree'. The base of the tree is on raised circle called a button.
- Surround the tree with a can and investment (plaster).
- Heat the can and investment so the wax evaporates. Then you are left with a negative space.
- Heat the appropriate amount of metal and fill the negatives space in the tree.
- Dissolve the plaster in water and cut the metal pieces off the tree.
- Finish and polish.
Friday, October 7, 2011
As many of you know, in making silver cow jewelry, I send it out to a small company in Maine to get the original model reproduced. I don't make the multiples myself because it's a labor intensive process and requires a lot of equipment. I've been on the search for a good video that explains the lost wax casting procedures and found this one is a good fit. It is from another jeweler showing how he reproduced a couple of wedding rings, but the process is still the same. It does lack, however, in some captions that I think would be helpful to explaining how it's done, so I will sum it up in a nutshell here: