Tony:

I think the Hydrochloric Acid Brick cleaner @ 36% would be very weak for etching and cleaning metal parts..........JMO.........I would call a 'swimming pool' supply house in one of your larger cities, I am sure they would have Muratic Acid full strength...?.......Any good hardware store should also have it....?........Maybe your laws do not allow full strength acid to be sold...?...........?......


Doug