Before Diamond Wire Spring Co., in Tyler, Texas, got in-house 3D printing capability, spring grinding fixture plates were machined out of steel by an outside machine shop, which was twice as costly and slow, says Keegan Yingling, the maintenance manager, who also has his own 3D printing side hustle. "For this application, we needed a material with strong mechanical properties and a high heat deflection temperature – springs get very hot when you grind them." They chose a PPA with 15% carbon fiber form 3DXTech on their Qidi Tech FDM.