Covid mask "EASY" version (upgraded to vacc.cleaner Hepa filter)

grabcad

Hi, I have modified and improved available model of the face mask.I found very useful HEPA filter (can send link) for acumulator vacuum cleaner- for car use (7USD at CZ). Filter has great 25 nano meter resistance! Thats more then enough!I uploaded also STL files tuned to good 3D printing.Filter housing needs to be glued to mask from front, rest is threaded.To use it, You need to buy 2 more things:1/) rubber sealing 8mm dia to put on the edge of mask (to seal to face).You can use edge rubber for car sheetmetal or similar.2) Rubber lines to mount whole mask on Your head.-) Plan is to desinficate filter after every use by UV-C lamp or ozone air cleaner (used for home infra sauna for example)...Will also upload PROFI version with reverse vents to keep filter dry (best for medicals, stomatologic etc)..Also tested and 100prcn working .-)Enjoy !Radek