Among the many impacts of the COVID pandemic was the disruption of supply chains, resulting in shortages of many products, including Personal Protective Equipment (PPE). To address this challenge, a group of volunteers worked together to develop a number of open-source mask designs that can be produced using affordable digital fabrication technologies (i.e. 3D printers, laser cutters, and desktop vacuum formers). For an overview of our mask designs, check out this video: https://youtu.be/0Cm4VRgP-MQ For a list of upcoming 3D Universe Untethered episodes, please visit: http://www.3duniverseuntethered.com/ For our digital fabrication solutions, please visit: https://shop3duniverse.com