Promote Ten years Early surgical mask for sanding under Innocent Viscous
3M N95 Woodworking, Sanding and Fiberglass Valved Respirator - UnoClean
PSA: Remember to wear a mask if you're sanding your CI. The black tone of the mask is solely from iron powder that I would've breathed otherwise. : r/castiron
3M 8511 Particulate Sanding Respirator N95 With Valve 10 Masks – AOSS Medical Supply
Are these masks sufficient against covid? They only had these ones left, I usually use the non-vented 3M masks, they block the most smoke (my method of testing in a high cannabis