There was a community printing effort in Waterloo to make Prusa masks as well, which similarly was evolved for scaling reasons into a design that could be done

There was a community printing effort in Waterloo to make Prusa masks as well, which similarly was evolved for scaling reasons into a design that could be done entirely with laser cutting: https://www.canadianshieldppe.ca/pages/our-story https://www.canadianshieldppe.ca/pages/our-story