Sliced with PrusaSlicer 2.2.0. Used ColorFabb nGen Flex filament for the mask body and filter cover. First 5 layers at 225 C, then 220. Bed temp at 40 C, no bed fan running. Very nice flexible surface, molded nicely to my face. Had a new tear drop shape N95 filter from another respirator. Fit perfectly. I'm very happy.