So far the only prep tools that I have are different types of picks. Because of this there isn’t that much chalk dust being put into the air at one time. I currently wear surgical masks which are less restrictive than other dust masks but they seem to be ok for what I am doing. If at some point in the future I start using tools that generate more dust, such as air scribes, would these kinds of masks work or would I need more restrictive ones? What do you use?    Thank you all very much