DIY 3M like masc foldable

cults3d

Final version of my 3M like masc foldable. I have designed it to be as efficient as a 3M masc. 21 prototypes have been made and tested them in real situation to optimise every part of it. All you need are elastics and scissors to adapt it to your face. Tests: - safety coefficient, to improve some areas resistance - clips resistance - mounting test (balance between fixation resistance and flexibility) Validation: - I have worn it 3 days 2h/day. Be very carefull the first time you fold it and follow global steps: - 1: fold the bottom (slowly) - 2: fold the top parts (easy) - 3: fold verticaly in 2 parts (slowly) - 4: fix the nose like on pictures (it is not easy, fold the nose in 2 part make it easier) - 5: adjust the masc to your face (the top part are very flexible) Well fixed, this masc is very resistant. The model size is big, you can reduce it by 10% maximum with Cura. I will update the STL for smaller versions if requested. I strongly recommand to fill the front filters with cotton or actif-charcoal cotton/filter. It takes 5 minutes to adapt it. The holes grid of the is 2by2 mm, I can change it if requested.