Saxophone Alchemy




I have had an old Yamaha Saxophone for over thirteen years. It was bought a bit rough to begin with, and after years of use and abuse, it was time to give this reliable instrument some love. I have a munchkin who has been learning to play, so I figured this would make a wonderful gift.

This instructable will show you how to do a chemical oxidation on brass, bronze, or any copper alloy for that matter.

Why do it?
In this case the chemical oxidation (sometimes called patina, redox, or distressing; depending on the application) serves two purposes: Give the sax a unique vibrant look and protect the brass from further erosion. The color I was going for was a charcoal gray to black. I believe I was successful!

What you will need:

-Saxophone (or whatever brass/copper/metal you wish to use)
-Small Flat head Screwdriver
-Small Philips Screwdriver
-Masking tape
-Fine grit sandpaper (400+)
-Ferric Nitrate
-Sodium Thiosulfate
-Multipurpose household cleaning agent
-Disposable gloves
-Plastic Tub
-Black marker
-Disposable coffee cup
-Disposable spoons
-Rust-Oleum Clear Lacquer

Optional, but it will make your life a heck of a lot easier:

NOTE:  if you don't have a sandblaster, you can make one with
-2' tube
-air compressor
-accessory kit

-baking soda

Total cost for materials (not including the sax, compressor, compressor parts and stuff I already had): A little over $80 bucks

Step 1: Step 1

Disassemble the saxophone. Be careful to write down and keep track of everything you take off, especially the screws.

I used masking tape and a black marker to hold and label everything. I didn't lose anything, so I must have done something right!

Step 2: Step 2

I wanted to test the chemical oxidation first to see what results I could expect. I sanded the neck piece, making sure to sand in the same direction. I used P400 Fine Grit to sand the neck piece. I did NOT sand out deeper scratches; the more you remove from the brass, the pitch of the saxophone changes. You can do what you want!

The formula I used was provided from the Science Company. The formula is as follows


    Sodium Thiosulfate... 6.25 gm
    Ferric Nitrate... 50 gm
    Distilled Water... 1 L


I decided not to use 1 liter of water since I was only experimenting. I used 1 cup. So the formula kept the same ratio, just a smaller amount. Also, I don't have a gram scale, so I used a dry weight conversion of grams to teaspoons.

1 liters = 4.22675284  ; for ease of calculations I rounded to 1 liter = 4.25 cups
1 teaspoon = 5 grams
1 table spoon = 15 grams

So I used 1 cup of (tap) water, 1.45 grams of Sodium Thiosulfate, 11.75 grams of Ferric Nitrate

Heat the water to 120-140°F, 50-60°C. I don't have a thermometer, so I estimated. Water boils at 212 °F (100 °C). I heated to the point where I saw the bubbles at the bottom of the pot (slightly steaming).

Now put on your disposable gloves.

Put the water into the disposable cup. Use the disposable teaspoons to add the Sodium Thiosulfate first, let it dissolve, then add the Ferric Nitrate. If you stirred the water with the spoon, DO NOT stick it in the chemicals! You don't want to contaminate the chemicals with a wet spoon.

Immerse the neck piece for 1 minute. When the neck piece is immersed, it changes to a purplish color after about 45 seconds. The color darkens quickly to the desired black in about 1 minute.

Pull the neck piece out and put it in the rinse cup.

I realized I did not have enough liquid to completely submerge the neck piece. I added about a cup to the solution, which diluted it some, but still got the job done in less than a minute. I also had to submerge the neck piece upside down.

As a side note, I also left a little bit of the lacquer on the neck piece in hopes of it reacting to the chemicals. It did not. This made me realize every bit of lacquer had to be removed, otherwise the brass does not react to the oxidation.

Step 3: Step 3

Satisfied with my results, it was time to move on to the horn. I started sanding by hand, but with all the curves, springs, and turns it was deemed impractical. So I built a make shift sand blaster.

A side note: I did try to use industrial strength stripper. I used two different kinds and they both failed to remove any lacquer.

I used a 2 foot hose, added a small hole where I inserted the air compressor. The other end went directly into the baking soda.

I tried sand first, which was a bit too harsh since it left little bumps, and a bit too wet. So I decided to use baking soda which worked beautifully. As a warning, the baking soda gets EVERYWHERE so do it outside.

Once it was sanded, I rinsed it off in warm water and pat dried.

Step 4: Step 4

Prepare the area where you are going to be working. I used a tub from Home Depot.

I made the mistake of not buying enough chemicals for the amount of water I needed, so I diluted the mix. I ended up using a little over 4 liters of water, with only enough chemicals for 2 liters. This simply meant it took longer than the one minute immersion. Actual time was a couple hours!

Heat the water in a pot then pour into the tub. Add the chemicals.

Even with the diluting, I still did not have enough liquid to submerge the saxophone. My solution to this was to tilt the tub and do half at a time.

The positive side of this is the slowly reacting oxidation yielded a beautiful color transition. The color transition was from a bright copper, to purple, to blue, to brown color, to gray, then finally to black. I contemplated pulling it out when it was blue. The pictures don't do it any justice.

Once that side was done, I flipped it and submerged the bell. If you look closely you can see where the mix did not completely cover the sax.

After both sides are complete, rinse the sax with warm water and let air dry. I hung mine upside down over night using a coat hanger.

A final note, since it took much longer to react,  I did pull the saxophone out in the middle of the process. I carefully poured the mix back into the pot and warmed again. I threw the pot away once I was done.

Step 5: Step 5

The next morning, I washed the entire saxophone again and rubbed with a soft cloth to remove some residue. The pictures are what they looked like after I washed the sax.

There was a brown stripe on area where the saxophone was not completely submerged. I liked the way this accident looked, so with the scouring side of a sponge I scrubbed the stripe. I then rinsed again.

The next step is to start lacquering the sax. I used the Rust-Oleum spray on clear lacquer. The first coat was tested on the neck piece. Satisfied with the results, I used a ladder and a coat hanger to hang the saxophone to make lacquering easier.

Step 6: Step 6

Once it was hung, lacquering was quite easy. It was pretty cold outside, so I brought the saxophone inside to dry. Then I took it back to the garage to spray again.

After several coats, I hung the horn right side up to make sure I lacquered every inch thoroughly.

Total coats where about 5-7 on both the horn and the neck piece, which used up one can.

Not in any of the pictures are the thumb piece (not the plastic part), screw, and neck screw which where also sanded, dipped, and lacquered.

Step 7: Step 7

Leave the saxophone to dry for the allotted time indicated on the lacquer can (I believe it was 24 hours to completely dry).

Clean keys with water and  Multipurpose household cleaning agent. DO NOT get any on the pads, since the cleaning agent may ruin them.

Carefully assemble the saxophone back the way you started. Again I started with the neck piece to see what it looked like.

Step 8: Done!

Once assembled, I played the sax a bit to see if the pitch had changed. I personally did not notice any, and I would like to believe I have an ear for it since I have used this same horn for many many years.

I included a before picture again.

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38 Discussions


1 year ago

Did you buy Sodium thiosulfate anhydrous or pentahydrate?


3 years ago

I LOVE this project. I'm gathering the components to do it with an old trumpet.

Question - I'm thinking about having a few areas of the trumpet remain BRASS colored. After stripping off all the lacquer, I'm assuming I would need to waterproof cover the areas I want to remain Brass colored (like the engraving). Do you have any suggestions as to what I might cover that section with? I considered just spray lacquering that area prior to submerging it in the chemical bath, but I believe the heat from the chemical bath would just strip the lacquer right off.


4 years ago

The cover picture is a bass clarinet, not a saxophone

1 reply
Gijs Vis

6 years ago on Step 8

I love this instructable! I'm gonna do this on a trumpet of mine, and I'll maybe make an instrucable out of it. I'm wondering though, how did you do it with the laquering on the inside? I mean, when you do the laquering, obviously something will go through the holes and the bell and stick to the inside. Did you covered the holes, or laquered the whole inside on purpuse or what? Please let me knoew

1 reply
joechacon98Gijs Vis

Reply 6 years ago on Introduction

I am glad you like it! I did not cover any holes. The inside did get some residual lacquer that was sprayed in. However, I do not have any valves that would stick. Since you're doing a trumpet, I would definitely pull out your valves and cover the insides. I would also recommend pulling out all the slides and doing each piece individually. The inner tubes, don't sand or lacquer those as that might affect how they slide.
Good luck! I look forward to seeing your results!


7 years ago on Introduction

wow, what impressive results. how do you think this process would work on a brasswind, say a trombone or euphonium?

6 replies

Reply 7 years ago on Introduction

Funny you mention that, the next test is going to be on a trombone!
In my opinion the trombone will be easier since it has no keys or valves. If you have a bass trombone then be careful around the trigger.

The euphonium, I would pull the valves out and either leave those alone or do it by hand. I believe the valves are not brass, but I may be wrong.

On either, you should have similar results. The metals are brass which is what the processes is intended for. Please share if you do it!!!!

One final note, I am still trying to figure out what I am going to dip the trombone in. The tub is large, but not large enough to submerge at once. Perhaps the flipping method I used will work??


Reply 7 years ago on Introduction

did you try taking the trombone apart? like do the bell section first, then the slide section?


Reply 7 years ago on Introduction

I used the same chemicals to patina copper pipe for a curtain rod. My solution was to soak rags in the solution and twist around the pipe. I got a great tie-died look from the different concentrations and contact areas. I think a tie-died bone would be awesome.


Reply 7 years ago on Introduction

That sounds really cool! Do you happen to have any pictures you can share? I would love to see that!


Reply 7 years ago on Introduction

That's actually a good idea. If I make a form for the desired instrument, I will need less of the solution and put more to work! Even a pit outside would work!


7 years ago on Introduction

So... how does it play?

Very nice instructable and an interesting project. Many years ago I paid $50 for an old bari and had it all cleaned up and fixed. Chemical dip and all. Looked like new when it was done. Still plays like an old low tone horn. ;-)

2 replies

Reply 7 years ago on Introduction

It plays quite well! The tone has not changed at all, it is the same as before!
Your bari, they did a chemical dip? Where?! Typically what I found, at least in my area, most places will sand and polish the brass, then lacquer with what ever type of lacquer they bake on horns. It comes out looking beautifully, like a brand new horn!
My issue with that was, when they sand to remove all the scratches they thin out the brass, which in turn changes the tone/pitch of the horn. Plus getting it sent is expensive and I am cheap! haha!
Oh some places will also electroplate, say silver, on to the horn. Neat stuff!
I would love to see pictures of your bari, could you share? :)


Reply 7 years ago on Introduction

I'm not sure where it was done exactly. It was one of the finishing shops in Minneapolis. It was many years ago and it was not cheap. When I got the horn it had some major green patches on it. When it was done, it looked like new.

I will have to see about taking some pictures of it. I had the work done on it close to 20 years ago now. It doesn't look as good these days but till in great shape. It has the used look about it. As it should. I have gotten some good mileage out of it.

Now it seem I may have the opportunity to gig in the EU later in the year. I need to get a newer case for it. Both horn and case are pushing 90 and the case isn't doing well enough to make that kind of trip.


7 years ago on Introduction

I have a YTS-23 that has been sitting in it's case for over 8 years now. I used it in marching band so it is kinda banged up, but on top of that, some idiot carved I <3 Beth into it before I owned it. I have been wanting to overhaul it so it plays good again, but this looks awesome. I'm going to have to try this if I get some spare time.

2 replies

Reply 7 years ago on Introduction

If you get the time, restore your tenor! The most time consuming part was sanding the horn.
I hate to admit this, but my alto had carvings that I did in 6th grade (I was 11, so cut me some slack!).
At any rate, most scratches and said carving was only on the lacquer. Once I removed the lacquer tada! Mistake gone!


Reply 7 years ago on Introduction

A professional sandblaster lives less than a mile from me, but my dad also has a compressor, so if I don't get the time to do this I might see how much he would charge. My brother is a chemical engineer, so he could definitely help me with this. He also plays the saxophone, but his is in way better shape than mine. If I take on this project I will let you know how the end result is.


7 years ago on Introduction

that turned out pretty darn sweet! I know i'd have been jealous in band class