What Is The Differences Between Expendable And Permanent Molds?
What Is The Differences Between Expendable And Permanent Molds? Expendable molds are made of sand, plaster, and ceramics capable to withstand high temperatures. Permanent molds are made of metals that keep their strength at high temperatures. Permanent molds are designed to be reused and able to withstand multiple operations. What is expendable mold? Expendable mold