When I was doing a lot of sanding, I had one of these masks, and taped it around the edges to my face. The mask would have been utterly useless if I hadn't done

When I was doing a lot of sanding, I had one of these masks, and taped it around the edges to my face. The mask would have been utterly useless if I hadn't done so, as all the dust would have just come around the edges. I just used painters' masking tape. It worked.