Sculptures of bronze come from two various methods, the Lost Wax method and the Sand Cast method. The Sand Cast method is a process of bronze casting only dating back to the year of 1818. In the later bronze sculpting Sand Cast method, the original model or wax or clay is cut into portions or pieces of various sizes and amounts depending on several factors of artist s desired choices and the shape and size of final desired bronze sculpture. After the casting block cools, the sand, blocks and core are removed to reveal the bronze cast. With either process used in bronze sculpting, there is the final process known as the patina or the finish applied to the bronze sculptured surfaces.
Sculptures of bronze come from two various methods, the Lost Wax method and the Sand Cast method. The first method of Lost Cast bronze sculpturing has been dated back to over 4000 years and has historically touched most every ancient culture of the world. The Sand Cast method is a process of bronze casting only dating back to the year of 1818. Since bronze can only expand in a slight degree and carries a strength beyond stone and ceramic materials, bronze has a unique preference among sculptures of past and present times in the artistic world.
The Lost Wax method is also known as the Investment method and is done with a full sized model and most always a oil based clay. The clay is made into the desired molded pattern and wax is then added, usually with a hollow middle provided for a middle core.
In a heated kiln the structure is heated until the wax completely runs out of the complex structure and removal of all moisture has occurred. It is what is left of the Investment that will hold one of the final steps of the molten bronze sculpture.
In the later bronze sculpting Sand Cast method, the original model or wax or clay is cut into portions or pieces of various sizes and amounts depending on several factors of artist s desired choices and the shape and size of final desired bronze sculpture. After separation, a slurry mixture is put completely over the pieces. After When this step is completely dry, the slurry is easily removed to go onto the next step of the Bronze Master Model to be poured. But first, each of the model pieces are cleaned, prepared and joined together. The Master Model is now pressed into large sand blocks. With a second block fitted over the original one, the middle core inserted between the mold and bronze is sand or a slurry mixture for pouring preparation of the bronze.
After the casting block cools, the sand, blocks and core are removed to reveal the bronze cast. With either process used in bronze sculpting, there is the final process known as the patina or the finish applied to the bronze sculptured surfaces. With the patina applied to the surface, the metal is forced to tarnish. From there, the final step is heat and apply the acidic chemicals applications for the finalization. The result a beautiful sculpture to cherish.
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