I was using some tonight to clean up a couple of small rust spots on an old Smith and Wesson with a high polish blue finish. I could definitely see scratch marks in the right light where I was rubbing the metal cleaner on the blueing.
The scratch marks could really only be seen well under the direct lighting of a light bulb, but they were definitely there. These scratches were not there before I used the Big 45 Frontier metal cleaner.
So even though they advertise that it "will not harm the finest blued surfaces" this is not exactly true. It may be alright with more dull finishes but I'm spooked to use it on anything with a high polish blue. I think I will go back to using a copper penny to get rid of rust spots.
The scratch marks could really only be seen well under the direct lighting of a light bulb, but they were definitely there. These scratches were not there before I used the Big 45 Frontier metal cleaner.
So even though they advertise that it "will not harm the finest blued surfaces" this is not exactly true. It may be alright with more dull finishes but I'm spooked to use it on anything with a high polish blue. I think I will go back to using a copper penny to get rid of rust spots.