3M 6300 half face mask generic filter mods

thingiverse

2021 Feb 3rd New version https://www.thingiverse.com/thing:4748934 These mods fit 3M half/full face masks that accept 3M mount air filters, plus a snap-on filter for outgoing air. I use 3M Filtrete A/D/H true HEPA filtration for bacterial and virus protection, from purple boxes with air filter stations. Boxes are 10” x 5”, filters 4”. Filters stick together with glue gun glue; carefully peel off to leave long strips, then cut to size and tape on custom mounts using very sticky tape like electrical tape. View more at my personal website https://gallaghersart.com/page/airtight_adapters_for_medical_masks_and_face_respirators Stay Safe! Print settings: Nozzle: .4mm Line width: .5mm Perimeters: no support Bridge: yes, set bridge flow to 60-75%, spaces between filament lines for easy cutting or leaving intact Wall line count: 3x, infill: 20% or more, top and bottom layers: 3x *3madapter_22.stl (print 2x air intake): uses 40g of filament 1x air outtake: uses 37g of filament Note about 3D prints: Even though sold as 3D prints, they have weaknesses along filament layers that can absorb water and moisture; viruses thrive in water. If cracked or broken, do not use.