Sounds as though Mr. gnoahh considers himself to be the resident know it all expert when it comes to the topic of rust bluing. My comments were not meant to be critical of his post, just stating
some knowledge gained in 35yrs.+ as a professional gunsmith. A lot of 'smiths I know report excellent results using the Pilkington Rust Blue. You might want to inquire at his website if there is a MSDS available that would list the chemical composition of his product and precautions necessary. BTW a paper dust mask is just that, meant only to protect from relatively harmless elements. The oxide thrown into the air while carding rust blue is much more hazardous and requires a higher level of protection, no matter if you are a home hobbyist doing a one time job or a pro doing it on an ongoing basis.
