masque covid red bull

grabcad

Hello, this mask replaces a surgical mask, a cotton remover as a filter or you can cut out an FFP3 filter to make several impression filters with a 0.6mm nozzle, 0.4mm layer at 50mm/s for 1 hour and 30 minutes. You need to mold the mask to your face by immersing it in hot water then applying it to your face.