HEPA Polygon for 3M Valvy [Customizable] (Updated 14-Apr-2020 Support 3M 6k 7K series, BVM, Ambu Mask ) Covid-19

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<h3>Go Polygon! Customizable Filter Cartridge Using Openscad.</h3> https://www.openscad.org <h3>Licensed Under The Creative Commons - Attribution - <b>No Derivatives</b>.</h3> 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. <a href="https://www.thingiverse.com/thing:4177128" target="_blank">Flexible Mask Valvy</a> <a href="https://www.thingiverse.com/thing:4185367" target="_blank">Simply Flexible Mask Valvy</a> <a href="https://www.thingiverse.com/thing:4189592" target="_blank">Respirator Valvy [ad:hoc]</a> 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. /////////////////////Customization BEGIN///////////////////////// // Time To Create Your Own HEPA Filter Cart Size $t=0; // Filter Parameter Polygon=6; //3 +ceil(13*$t); //+6*$t; HepaLength=80; //150 -100*$t; HepaThickness=10; //10+10*$t; // +15*$t; // Fitting Parameter Shift=8; //20-20*$t; // Filter Center Adjust From Mount Center. Too Much Will Collapse The Housing Cone CoverDelta=2.5+(0.88); // Adjust "+(0.88)" The Cover Size To Fit The Housing, Or Heatgun Action //0.88PLA Cover //0.28TPU Cover MountSizeAdj=3.15; // +8*$t; // Flexible Mask Valvy //3 TPU2TPU //3.15 PLA2TPU //3.4 PLA2PLA // Mount Size Options //MountSize=33.6/2 ; // Flexible Valvy //MountSize=22.4/2-MountSizeAdj; //for Ambu Mask 22.4 diameter. MountSize=24/2; //3M Mask 6k 7k series 3MMountThickness=-0.0; // 3M Mask 6k 7k series O-ring Adjust. (or error compensation due to overhang structure.) // 3D Printing Parameter Slope=15; //28-23*$t; //Adjust To Avoid Overhang Print Issue ShellThickness=1.28; // Too Less Will Collapse The Cone(Too Thin). Adjust This Will Also Need To Adjust CoverDelta. /////////////////////Customization END///////////////////////// Welcome Comments And Suggestions. Tip Me A Cheese Burger And Subscribe My YouTube Channel If You Like My Work. https://paypal.me/iczfirz https://www.youtube.com/c/iczfirz Special Thanks To <a href="https://www.thingiverse.com/danielmgroh1/about" target="_blank">danielmgroh1</a> Who Made A Comment To Request Support For HEPA. Looking For 3D Printed Air Purifier Device? Here You Go The >> <a href="https://www.thingiverse.com/thing:4229193" target="_blank">[Deckman]</a>