| 21. | Compared to other casting processes such as die casting or sand casting, it can be an expensive process.
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| 22. | In the simplest sand casting procedure, the drag is placed upside down on a board, around a strake.
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| 23. | Sand casting is one of the most popular and simplest types of casting, and has been used for centuries.
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| 24. | Sand casting also allows most metals to be cast depending on the type of sand used for the molds.
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| 25. | Another similar defect is a " s ", which are buckles that occur in the cope of sand castings.
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| 26. | Plaster casting is similar to sand casting except that plaster of paris is substituted for sand as a mold material.
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| 27. | Until the late 20th century, bentonite clay was widely used as a mold binder in the manufacture of sand castings.
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| 28. | Bj�rn Ekegren's sculptures are created using a sand casting technique similar to the one used by the Egyptians 2000 years ago.
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| 29. | These include sand casting, investment casting ( also called the " lost wax process " ), die casting, and continuous casting.
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| 30. | It is a unique museum of its kind in the Nordic countries introducing the traditional sand casting method of the foundry.
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