The term “lost wax casting” is used because the original wax design or pattern is melted out of the mold after the object has been formed. The wax design is then completely surrounded or “invested” into a ceramic slurry which eventually solidifies into the mold. The mold is first formed to your specific design by creating a disposable wax pattern. Investment casting is one of the oldest casting methods where molten metal is poured into a ceramic mold.
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Once the metal has solidified, the mold can be hammered in order to crack the sand and expose the metal object. The mold is filled with the molten material which will then cool and harden.
You can also carve patterns or designs directly into the compacted sand. Due to its malleable texture, sand casting can be used to replicate intricate objects by pressing the object into the sand to leave a negative impression of the design that is then filled with your molten metal. The sand/clay mixture is often contained in a metal flask or mold in order to be able to compact the material to a dense state for optimal pouring results. Sand CastingĪn inexpensive casting method where a sand and clay mixture is used as the vessel in which to pour your molten metal. *Be sure to pre-heat your graphite ingot molds to prevent thermal shock and cracking. The metal is heated in a crucible to its specific melting point and then is poured into the mold of your choice to complete the process. This is done so by using a crucible to hold your material and a heat source such as a melting furnace or a hand torch for melting.
Hand Pouringįirst, metal is heated until it reaches a molten state. Determining which method is best for you will depend on your budget, the type of material you are melting and the amount of material you wish to melt at one time. Metals can be melted using a torch, an electric, propane, induction furnace, or even a microwave melting furnace.
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We also carry a full line of melting furnaces, crucibles, and torches for the initial melting process as well as handling tools and safety gear for handling your metals during the casting process. These molds are offered in a variety of shapes and sizes to accommodate your specific needs. We carry graphite, steel, and cast iron molds to mention a few. Here at PMC Supplies, we specialize in offering tools for both melting down precious and non-precious metals and pouring them into a mold. The casting process has been used for thousands of years for making sculpture, jewelry, tools and more. There are different types of casting methods including hand pouring, sand casting, investment casting, lost wax, spin, and centrifugal casting. The solidified piece of metal also referred to as the casting or ingot is then released from the mold to complete the process. In relation to metalworking, casting is the process in which metal is liquefied and poured into a mold which is then cooled and solidified into the shape of the mold’s cavity.
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