In centrifugal castings, the cores are generally made of Production Engineering Mcqs May 28, 2019 BILAL KHATTAK0 A.Green sand and molasses B.Wax C.Plastic D.Plaster of paris E.Cores are not used Related Mcqs: Vertical centrifugal castings as compared to horizontal centrifugal castings are spun at Green sand moulds are Blow holes in castings are due to The advantage of centrifugal casting is Warped castings may be produced due to Which of the following is used on moulds for magnesium castings to prevent metal mould reactions? Plaster patterns and core boxes are made of Consumable patterns are made of Shot blasting is the process for the cleaning of Draft allowance on castings is generally