BIRCHWOOD CASEY Brass Black Metal Finish,3oz

"Your results may vary." Keep that in mind. I just received this yesterday and have only used this for the single highly specific purpose intended.I used this to chemically blacken the head of soft "yellow" brass wood screws used in a 1946 Baldwin grand Piano. I believe these screws were all originally blackened in a similar manner with all but one being "polished away" either by mere ordinary use or "mistake" as "brass should be "shiny."See video for clues to the mystery and see if you agree. The only audio is the piano itself.Sorry that the video ends before the top is installed but I'm waiting on some new rubber "mushrooms" as the old ones are so hard and deformed that they actually deformed the wood (and finish) below--fortunately I could save and "camouflage" the finish damage but of course the wood damage is permanent.Some things I discovered that won't be apparent from the video:1) Timing is critical. About one minute as per label instructions seems right.2) Additional "coats" only help to a point. About three seems the max before you hit a point where it seems nothing really changes--some parts "more black" but others "less black." Again--this seems to be very much an "art."3) YOU CANNOT DIP!! It simply won't work! And DEFINITELY don't dip in the full bottle! You would contaminate the entire EXPENSIVE thing! If you MUST attempt to dip then pour a small amount into an appropriately shaped small container!4) Too much of the product just eats away at the coating you've put on.5) Too little of the product and nothing really happens.6) The rim around the screw head is VERY, VERY difficult to cover fully.7) Be CERTAIN to use steel wood in the preparation stage!8) The instructions are excellent and should be generally followed step=by-step and sort of to the letter. That said, while rinsing is absolutely mandatory, blotting dry with microfiber is fine for something that doesn't need "buffing" for any sort of appearance when you just want it to "disappear" to begin with...9) While I have every reason to suspect that this piano left the factory with screw heads "finished" in much this manner perhaps using the exact same sort of chemical formulation know that as produced it is highly fugitive in that you can even "polish" it away with your fingers. This "problem" can be "fixed" lets say by using a couple very light coats of gloss spray lacquer. Some but not all brass on this piano (think hinges) were originally lacquered--very nicely--nicely enough that I just refinished an excellent existing lacquer finish on brass during the restoration--it never saw any "brass polish." The screws used however had never I'm sure been lacquered. Baldwin was sort of the "Chevrolet" maker of US Pianos compared to a fancy name that likely would have gone the extra mile let's say to lacquer those screw heads...but even then it could be polished away...

Refinished some brass and bronze items with this and it worked great

I use brass black for my plates that I engrave. I like how it will not affect the rest of the brass plate when i apply it . I purchased 2 more bottles. Very pleased

As described. Good product. Thanks,

I compare my need for this product to someone giving themselves a bad hair colour job, where after they've made the mistake and have horrible yellow hair, they are trying desperately to find a way to bring it back to its original colour!In my case, I have an old brass door knocker that can be dated loosely between 1945-1975 (LOL). I'm in the process of updating my front entrance door and thought, hey after 25 years maybe there's something nice under this black stuff. I send a picture to my brother and he said, it could be brass.Without thinking, I took my SOS pad and in seconds was able to remove the black to reveal brass thinking I found treasure (and sent him the photo of it partially sanded and then... about 30 seconds later I was like... "OMG, now I've done it! I really want it blackened! What am I going to do?!" So to the internet and Amazon I went so fix my mess. I figured someone must have discovered a way to do it by now and someone did! Birchwood Casey.This product worked like a charm! I actual found it is more commonly used on guns (gasp), but that it can work on any brass metal object.Here's how I did it.- I first wiped down the knocker with acetone to remove any residue.- I then soaked cotton pads, wiped the surface with Brass Black let sit for about 2 minutes and continued to applied several applications, while letting in dry in between each one.- I let the whole thing dry for about 5 more minutes then washed under water. A tiny bit of black came off but nothing notable.- I held it up on my door to take a photo and show you how well it worked!Take a look at the photos! It's actually funny how I have a picture of each stage as I was so excited, full or regret, then excited again. If you have questions, be sure to ask a question vs. comment as Amazon doesn't send me messages when comments are left.