Full face respirator or half face respirator is an absolute must in metal polishing. I can’t stress this enough. There are so many risks to not having the proper safety equipment. I cannot preach safety enough. I know so many polishers both old and young that have health issues because of metal polishing. Polishing metal is a risky business. You don't want to suffer from black lung. It is known as one of the worst things to suffer from. Be safe out there and use some sort of respiratory protection. The Full face respirators that my crew and I wear are available on goshineon.com/shop