HEPA for 3M Valvy [Customizable] (Updated 17-Apr-2020 Support 3M 6k 7K series, BVM, Ambu Mask) Covid-19

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Customizable filter cartridge using Openscad.https://www.openscad.orgLicensed under theCreative Commons - Attribution -No Derivatives.You can repost your remixed STL. But please don't repost your remixed scad file, as I will update it.Design to best suit for the following Valvy Mask and respirator.Flexible Mask Rolley Universal Modular SystemFlexible Mask ValvySimply Flexible Mask ValvyRespirator Valvy [ad:hoc]Just modify 3 parameters to create your own filter cartridge stl.You can also adjust the center of mount and the shell thickness.The animated gif below shows how much the customization can do.Do feedback and post a Make about your STL, filter material info, where to buy and the customization parameter to the below. Goodluck!!!https://www.thingiverse.com/thing:4196325/comments/////////////////////Customization BEGIN/////////////////////////// time to create your own HEPA filter Cart size//Filter parameterHepaLength=60; // -20$t;HepaWidth=50; // +30$t;HepaThickness=10; // +15*$t;//Fitting parameterShift=5; // -10$t; //Filter center adjust from mount center. Too much will collapse the housing coneCoverDelta=2.5+(0.28); //adjust "+(0.88)" the cover size to fit the housing, or heatgun action //0.88PLA Cover //0.28TPU CoverMountSizeAdj=3.15; // +8$t; //Flexible Mask Valvy //3 TPU2TPU //3.15 PLA2TPU //3.4 PLA2PLA//Simply Flexible Mask Valvy //1 TPU2TPUInletBoundaryWidth=8; //default 8. Adjust to prevent filter edge leakage.//Mount Size options//MountSize=33.6/2 ; // Flexible Valvy//MountSize=22.4/2-MountSizeAdj; // Ambu Mask 22.4 diameter.MountSize=24/2; // 3M Mask 6k 7k series or compatible3MMountThickness=-0.0; // 3M Mask 6k 7k series O-ring Adjust. (or error compensation due to overhang structure.)//3d printing parameterSlope=15; // +10*$t; //Adjust to avoid overhang print issueShellThickness=1.28; // Too less will collapse the cone(too thin). Adjust this will also need to adjust CoverDelta.//Uncomment one of below, press F6 and wait, then F7 to export STL.//translate([10*$t,0,0]){//HEPA_Housing(0); //Suggest PLAHEPA_Housing(1); //3M Mask 6k 7k series. Suggest PLAHEPA_Cover(); //Suggest Flexible/TPU%HEPA(HepaLength,HepaWidth,HepaThickness);}/////////////////////Customization END/////////////////////////Welcome comments and suggestions.Tip me a cheese burger and subscribe my YouTube Channel if you like my work.https://paypal.me/iczfirzhttps://www.youtube.com/c/iczfirzSpecial thanks to danielmgroh1 who made a comment to request support for HEPA.Looking for 3d printed air purifier device? Here you go the >> [Deckman]  Video Instruction How-To Customise.      Category: DIY