COVID-19 Biohazard-2 Respirator. Easy inhale. In and Out airflows separated.

thingiverse

Respirator with Excellent Fit, Especially Under the Eyes Zone Inhale through mouth and nose, exhale by mouth through the valve. Because of separate air flows for inhalation and exhalation, you always breathe fresh air. Humidity inside the mask is normal; water vapor escapes immediately. Compatible with protective goggles. A large filter size allows for free breathing. About the Valve: The membrane is made from a "medical finger pad." If unavailable, use the finger of a latex glove as an alternative. To assemble, follow this order: 1) Assemble the exhaust pipe and case (star) using some glue. 2) Next, take a thick inner tube and pull it over the finger pad; fine-tune until the valve works properly. Secure the pad with thread-cut extra parts of the pad. 3) Assemble with glue. Nose Fixer: When printed, the fixer is straight. Heat it with a hair dryer until it becomes relatively soft. Apply to your nose to form it. Wait until it chills slightly. Set minimum wall thickness at 2mm and top/bottom layers at 5 or more. Cover the outer surface with some ABS juice lacquer (ABS dissolved in acetone).