I have watched quite a few if not all of the powder coating videos on youtube. One thing I have seen is hardly anybody wears a dust mask. I don't know where people got the idea that you could be alright without. There are several videos that the coater has a light above his head and when he shakes the bullets or takes the lid of of his swirl container you can see the dust swirling around his head. This stuff will damage your lungs.Research it on the internet. Please use a dust mask.