When John Groth was 30, he said to himself he would start a second company by the time he turned 50. Well, 50 is around the corner and Groth is ready to start, if not a new company, at least a new line of business at his Southwest Pattern Works. SPW has been making tooling, dyes and more for industry for 20 years, producing everything from advanced plastic and metal molds for Sandia National Laboratories to custom metal parts. But Groth has seen more and more customers ask for advanced carbon-fiber…
