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Orange Peel

Orange peel presents as a wobbly, yet relatively smooth surface (like a fine sandpaper) that appears on the surface of the casting. This defect indicates that either the casting skin was destroyed by excessive shot blasting or the wax pattern was over-etched, giving it a wobbly surface. 

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The causes of this defect are evident in the metal and other portions of the process. To cure these causes, R&R recommends taking the following actions.