OK found another one. This one looks a bit easier to print out.
https://www.instructables.com/id/N95-Sealed-Face-Mask-3D-Printed-BaileyMask/
OK found another one. This one looks a bit easier to print out.
https://www.instructables.com/id/N95-Sealed-Face-Mask-3D-Printed-BaileyMask/