Do you know what procedures does lost wax casting use?

Investment casting is commonly used by jewelers as it allows precise castings with full detail. This form of casting has been around since ancient times under the name of precision casting. Investment casting involves creating a wax copy which is then covered in slurry creating a shell, much like the kind of shell in lost foam casting. The molten aluminum replaces the wax which melts out of the shell and can be collected for reuse. Artists and casters that need high precision parts favor this technique.
Lost Foam Casting is a form of Investment Casting much like steel casting. The key material of Lost Foam Casting is of course foam which is not used in other metal casting methods. The use of foam has many benefits to the artisan like ease of use and shaping and the relative inexpensive cost of the material. Each casting is going to be one of a kind since the original casting of foam is lost during the process.
The foam original will be replaced by the molten metal unlike the Lost Wax Casting where a wax mold is made of the original and then coated with a ceramic shell in preparation for the molten metal. Luckily, most foam is pretty inexpensive so the loss of the original shouldn’t pose a significant financial loss, just an annoying creative loss.
Foam is easily shaped by hand held tools but even still some practice may be needed to prefect the sculpting of the material. You will need to place a sprue into the foam which will allow the molten alloy to spread into the foam and adopt the shape of the item. Packing the foam and sprue in sand is a good way to insure that the mold will retain its shape through the pouring process. The metal will replace the foam by vaporizing it, and it is really quite a sight to behold.
Though there are many who prefer to adopt the procedures used in Lost Wax Casting for the Foam casting. After spruing the foam original you are going to dip it into a solution to create a shell and then pour the metal. The goal of this is to create a cleaner surface.

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