In the die casting process, what pushes the finished, solidified part out of the mold?, Ejector pins, sprue pins, What material is used to make the initial patterns in the investment casting technology?, The patterns are made of copper, The patterns are made of wax, In the investment casting process, what substance is the wax pattern (pattern tree) dipped into to create a hard mold?, It is dipped into a aluminium slurry, It is dipped into a ceramic slurry, What is the mold made of in the sand casting method?, The molds are made of silica sand mixed with a binder such as clay., The molds are made of river sand mixed with a binder such as gravel..

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