Thanks for the feedback. Always appreciated. Thanks for watching. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

You are absolutely correct. I had misread the tiny print instructions on the bottle. However, sometimes you learn things from your mistakes. In this case, the metal was still reacting to the bluing after 30 seconds. The 30 minute results were actually some of the best I've received. Since that gun I've done some other repairs on other firearms. I've found the steel in different guns react differently. A Colt turned more gray than black, an Iver Johnson had blotchy results, an Astra had a blotchy brownish result, and a Walther had fantastic results. Alcohol works best for cleaning. Heating the part gives better results as well. Thanks for watching and taking time to comment and if you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

@@mickmacstabletopreviews8466 I've got to do an old single shot .410 Baikal shotgun. I thought that your finish did look really good even after 30 minutes. I'm thinking of leaving it on the Baikal for 30 mins to see the out come. It just goes to show that too long isn't detrimental to the metal.

Like I said, I found as long as there's still a reaction going on with the bluing agent (which I could see) I just left it work. Some metals had no reaction other than the blackening which was immediate. 30 seconds was probably enough time. Additional time would probably make no difference. Others had more reaction which would continue so I left more time. I suspect you won't know until you're actually doing the bluing. Best wishes and good luck.

Excellent! The Remington 870 Wing Master is a nice shotgun. Cleaned up it should be beautiful. Well worth the effort! Best wishes. Thanks for watching and taking the time to share. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

Probably good advice. But note that Birchwood Casey will sell you their applicators (they look like a cotton ball affixed to a wire with a loop on the handle) which fit into their bottles perfectly. It gives the impression that you'd be repeatedly dipping into the bottle on a large project. So I'm not so sure about a dipping restriction. Also, while I usually use a fresh swab or patch each time when applying bluing, I have occasionally re-dipped. The same bottle has lasted almost a year and through many projects and does not seem to have lost its potency. However, I would still agree with you that re-dipping isn't the best idea. Thanks for taking the time to comment. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq and Rumble.

Great! Glad you found it useful. You may also find it helpful to check out my in-depth video on re-bluing at: kzfaq.info/get/bejne/Z7WgetaCvLSzhHk.html Thanks for watching. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq and Rumble.

Perhaps, but Birchwood Casey's Blue & Rust remover did remove the old finish. That would not have happened if it were paint. Whatever, it was indeed a weird looking damage. Thanks for watching and taking the time to comment. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq and Rumble.

@@mickmacstabletopreviews8466 maybe the steel wool is what took the paint off, it's just that the finish looked more like the rest of the frame ? I don't know just an observation...thanks and have a great day !!

You too and enjoy the weekend.

If you mean, can you apply cold bluing over old bluing? Yes, you can, but the results may not blend and may appear blotchy. Bluing will only work on bare metal areas. That being said, you can experiment and try an area where bluing has been worn off, like on the muzzle due to holster wear. In the end, if the results are satisfying, you may have just saved yourself a whole bluing job. I've done this myself with good results. Thanks for watching and taking the time to comment. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq and Rumble.

The instructions suggest 30 seconds, but as I point out in other replies, I've found that leaving it on for as long as there is visible reaction gave me better results. Also, metals differ, so with S&W carbon steel, I've found that reaction could continue for minutes beyond 30 seconds. 30 minutes on first application worked for me on this gun, but not so much on others. Thanks for watching. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

Other than what I said in my review, I have tested Perma Blue and it appears to provide a lighter bluing effect than Super Blue. I had hoped it would have been darker. Aluminum Black did not perform well in my opinion. As for what would turn a surface green? I have no idea. I suspect it would have more to do with the composition of the metal itself. Thanks for the question and thanks for watching. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

@@mickmacstabletopreviews8466 thanks very much for the answer

Yes, Birchwood's instructions are for 30 seconds. However, my experience has been that as long as there's a reaction going on, I'll leave it work with good results. I think the quality of the metal makes a difference. Usually under 2 minutes with a liberal application will do, but this S&W slide was a bit weird with the reaction continuing for minutes. 30 minutes was probably unnecessary, but it didn't hurt and I had good results. Thanks for watching and taking the time to comment. Don't forget to like, share and subscribe. If you haven't already, I hope you'll check out my other "Mick Mac" Tabletop Review videos on KZfaq.

​@@mickmacstabletopreviews8466😅