Consider Material Extrusion (MEX) printing of a thermoplastic component compared to injection molding. a) If the printing resin costs $3/part and the molding resin cost $0.5/part, how large must the part run size (number of parts produced) be for the injection molding to have lower cost per part if the molding die set for the molding machine costs $450,000 and all other costs for the two processes are the same. b) For the same resin costs, consider now that the injection molding press which uses the same mold costs $550,000 and the large-scale printing machine cost $400,000. All other costs are the same. Calculate the new economic run size for the injection molding process and sketch a log-log graph of the cost per part versus number of parts for the two processes