What is lost wax casting? I’m glad you asked because I’d love to explain what this is. It’s a process in which you take a wax, invest it and then cast metal into where the wax was. This is the most simple explanation. I’ll go into more depth in just a minute.
So I’ve been casting my own silver for a long time now. I enjoy it very much. I feel it helps me fell more complete as an artist. This is because I am able to do the whole process myself. I design something in my head or on paper and then can build it in CAD without having to rely on someone else’s ideas or influence the design. I also don’t have to micromanage a designer to pull out what’s in my head. I can then get a precision wax made of what I built in CAD. From there the wax is sprued up into a wax tree. This tree can then be weighed and covered in a metal flask. The investment is then mixed and poured into the flask. Once dried the rubber bottom is then removed and you’ll see the wax sitting there. You put that part face down inside the kiln. During this process the wax melts out and leaved the impression of the art piece. Once it finishes an 8 hour cycle and brought down to the proper temperature, the flask is removed and placed on the vacuum cast machine. There are other types of casting machines, but vacuum casting is the method I use. I then take silver and heat it up to the proper temperature and then pour it into the flask where the wax once was. The silver solidifies and cools off. I can then quench it in a bucket of water and remove the silver casting. If everything worked as it should, the jewelry item is with all the details the wax had. Then the sprues (which are the wax rods that connect the opening where the silver is poured in to the jewelry item) are cut off and the jewelry item can be cleaned up and finished. It’s a lengthy process that is very rewarding as an artist. I do not cast gold even though I could and have before. This is because it’s a bit costly for me right now. Maybe in the future I can. Anyway, that is the process of the lost wax casting. I hope you enjoy the process.