1. What are some of the major disadvantages of the expendable-mold casting processes?
2. What are some possible limitations of multiple-use molds?
3. What are some common mold materials for permanent-mold casting? What are some of the metals more commonly cast?
4. Describe some of the process advantages of permanent-mold casting.
5. Why do permanent-mold castings generally have higher strength than sand castings made from the same material?
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