VERSION 2: Wiles COVID Pandemic Mask - Fight the PPE Shortage,

thingiverse

This text appears to be a log of updates and changes made to a 3D printed face mask design by a group of individuals from various locations, including France and the United States. The updates cover a period of several months, from March to May 2020. The initial update mentions that the design has been improved upon, with a new strap loop model created by "Igor & Pascal" from France. They also mention that the idea for the square to hold the filter in place with minimal glue was sparked by Dr. Premkumar. Later updates mention the use of ABA-PGT and Medtronic for designing and injection molding the new filter box, as well as the creation of a gasket that can be printed from TPU material. The text also mentions the testing of different materials, including 3M Filtrete MPR 2200 and MERV 13 corrugated filters. The updates also mention the use of dual nozzle printers for printing with TPU material against the face while keeping the rest rigid, as well as the creation of a filter box with tabs that allows the filter retaining square to pop in tight without any glue.