Single DAR filter adaptor for Decathlon Subea Easybreath 500 : For Twin DAR filter adaptor look here: For old mask (not 500) look here: The new mask has different (significantly larger connector). The filter cones are design according to ISO 5356-1:2015 standard, with FDM 3D printing technology in mind. This veion need no support at all, the locking tab is separated, so can be printed flat. This make it very strong. Easy to assemble - just click in. Once assembled it's hard to disassemble. The initial idea comes from Print paramete: Material - PET-G Nozzle max 0.4mm Layer max 0.2mm Perimete - <=3 Top/bottom laye - 3 Infill deity - 40% Infill pattern - Concentric or Grid Seam position - Random Solid Infill Threshold Area - 70mm2 Best result could be achieved with adaptive printing paramete set. Print paramete adjusted for different adaptor areas. For detail ask in comments. For massive production print separately adapto and tabs. Files in project: Subea_EB500_1xDAR_Adapter_separate_tab_v1 - full set containnig all adaptor elements - ready to print Subea_EB500_1xDAR_Adapter_separate_tab_v1 - adaptor with peel-off integrated support - usefull for aranginng multiple adapto on print bed Subea_EB500_1xDAR_Adapter_separate_tab_v1.0-A-no_int_supp.stl - pure adaptor - should be printed with support generated in the slicer. Be carefull to place support only under exhale plugs. Otherwise support leftove will block the adapter form proper italaton on the mask. Subea_EB500_1xDAR_Adapter_separate_tab_v1 - separate locking tab - usefull for aranginng multiple tabs on print bed Subea_EB500_1xDAR_Adapter_separate_tab_v1 - separate front valve wahser - usefull for aranginng multiple washe on print bed. Washer should be fixed with CA glue under front valve membrane to provide intial preteion of valve. Project is continuously improved in close cooperation with: Waaw Univeity of Technology Faculty of Automotive and Cotruction Machinery Engineering. Print and use at your own respoibility.