Bellus3D
The SFM-B is a custom-fit reusable respiratory mask based on the Stopgap Surgical Face Mask (SFM) Revision B design (https://3dprint.nih.gov/discover/3dpx-014168).
It is made using a Bellus3D face scan (created with the Bellus3D FaceApp or Dental Pro for iPhone X+ or iPad Pro with TrueDepth Camera) and a 3D printer to precisely fit a person's facial geometry.
Attached is one example that fits about 15% of the population.
You can download the Bellus3D FaceApp (https://apps.apple.com/us/app/bellus3d-faceapp/id1352268131), scan your face and output a personalized STL to use on your 3D printer.
The mask is in direct contact with the skin so please follow the instructions in the Documentation section regarding printing materials.
More information can be found here: https://bellus3d.com/solutions/mask-fitter
See Documentation tab, manufacturing instructions
Stopgap Face Mask (SFM) Revsion B: https://3dprint.nih.gov/discover/3dpx-014168
Please attribute contributions from Formlabs: Jessie Bergau, Gaurav Manchanda, USNA: Rick Link & Brad Baker.
Bellus3D, Inc.: https://bellus3d.com/solutions/mask-fitter