Explain the difference between open molding and vacuum bag molding. 2. How does infusion molding differ from resin transfer molding? 3. What is the difference between a catalyst and an initiator? 4. Which forming process would you use to make the following composite parts? A. A 12 diameter pipe with a 1/4 wall thickness to be used in a chemical plant. B. A roof panel for a road grader. Production is one grader per day. C. Tool chests for contractors. The company produces ve units a day. D. Overhead storage bin doors for a passenger jet. A hundred parts are needed for each plane, and production is four planes per