Thread: This is why you want to use breathing masks

Today I was using my dremel on my next razor in order to shape it. Not removing chunks of metal, just finetuning with flapwheels and sanding drums.
I couldn't see anything flying away except there was a lot of sparkling underneath my working light.

After an hour or 2, my breathing mask looked as shown in the pic below.
Remember guys and gals: anytime you use a powertool to sand, grind, buf, or otherwise send micro debris flying, you want to be wearing that mask. Getting that stuff in your lungs is not good for you. This is what made grinders drop dead at 30 - 40 in the 19th century.