Yes. its common for gun enthusiasts to strip off old blueing and retreat with this.
I got a reprioritization when a pipe broke in my bathroom. after inspecting, i am in the throes of a total copper repipe. 49% done now. with sectional valving, I have one toilet and 2 garden hoses for showering [brisk!] and I will today get both bathrooms back with hot water. each time I open a valve I pray for no leaks. had one on the first leg and was able to pull it apart and re sweat it. I do more mischief to my back lying on my side than most anything else [except jackhammering]
all my front end parts are back now, including the jaguar rotors and calipers. they have the same 5x112mm lug pattern as the vanagon. I had the front vanagon rotors turned down to fit inside the jag hat rotors and 1/2x 20 studs pressed in almost 3" long for the thick mercedes ronals.
next week I will get it together and get to the next list items.