Pennsylvania’s ‘masks in public’ order manifests in a variety of ways in Western Pa.
Alyson Holt’s house in Murrysville is starting to fill up with 3D printers. Her husband, Gary, already had two and recently ordered a third. These days, they are humming steadily, creating moldable face masks using polyactic acid plastic, the most common material for 3D printing. The Holts are using a...