3D Printers The 3D printers at Portsmouth Naval Shipyard in Kittery, Maine, are fitted to use surgical-grade resin specifically designed for Class I medical devices. The shipyard now has the equipment in place to produce 10,000 nasal swabs per day, with the ability for scaling up to meet an even larger demand should the need arise. SHARE IMAGE: Download Image: Full Size (1.94 MB) Photo By: Jim Cleveland, Navy VIRIN: 200513-N-TT535-010.JPG Photo Gallery