![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 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](https://i.redd.it/efe6qwvm07461.jpg)
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™ 8210 N95 Sanding & Fiberglass NIOSH-Approved Performance Face Masks, White, 2-pk | Canadian Tire 3M™ 8210 N95 Sanding & Fiberglass NIOSH-Approved Performance Face Masks, White, 2-pk | Canadian Tire](https://media-www.canadiantire.ca/product/fixing/tools/cutting-measuring/0550291/3m-sanding-and-fiberglass-respirator-2pk-598e1475-a663-42c8-9a01-5a2f08a79d19.png?imdensity=1&imwidth=640&impolicy=mZoom)
3M™ 8210 N95 Sanding & Fiberglass NIOSH-Approved Performance Face Masks, White, 2-pk | Canadian Tire
![Choosing the Best Safety Mask for Woodworking - Bayne Custom Woodworking | Nashville Woodworker | Custom Furniture & Children's Toys Choosing the Best Safety Mask for Woodworking - Bayne Custom Woodworking | Nashville Woodworker | Custom Furniture & Children's Toys](https://i0.wp.com/baynecustomwoodworking.com/wp-content/uploads/2022/09/all-three-masks.jpg?resize=1024%2C1024&ssl=1)