How to Make a Trombone


Are you a bit curious to learn about the perfect procedure how to make a trombone? If your reply is yes, you must read this entire article because it could be the best possible resource. A rigid shell trombone case can be extravagant, specifically next to paying lots to your trombone.

However, you can sidestep the expense, be that as it may, by making your delicate shell case, basically a gig pack for the instrument. On the factor, when whole, you need to encompass a tie, and the shoulder can be persevered, leaving the arms free. In this article, I am going to discuss some easy techniques of how to make a trombone.

How to Make a Trombone

Required Materials for Making a Trombone:

  • Trombone mouthpiece
  • Drill bit size: 0.75mm (0.0316 in) and 0.80mm (0.031 in)
  • Spare trombone slide with a diameter of approximately 16 mm, 18 mm, or 20 mm; an old bicycle inner tube will also work as a substitute.
  • Tape measure or ruler, pencil, and scissors
  • Electric drill with a metal drilling attachment (see footnote)
  • Protonix rubber molding compound and ProtoFill polyester fillers for reinforcing the plug; one of these will be used to create the trombone slide body and mouthpiece stem to provide an airtight seal
  • Acetone or turpentine for removing the rubber mold from the finished trombone body and mouthpiece stem
  • Bicycle inner tube, old cloth rag, pliers with a wire cutter attachment: these will be used to create a bell plug to make it easier to change notes while playing
  • Chopsticks, pliers, or a small stick: these will be used to hold the bell plug in place while it is drying
  • A piece of wire; will be used for attaching the trombone slide to the mouthpiece stem
Trombone Mouthpiece

Techniques on How to Make a Trombone:

Technique One:

Step One: Cutting Out Two Ovals

The first step involves cutting out two ovals from a sheet of ProtoMax (or similar material) and placing them on top of the other to create a mold. A ProtoMax sheet is approximately 11″x14″.

Step Two: Meltdown Modeling Clay

Melt down your favorite modeling clay (I recommend using Premo or Sculpey, but feel free to experiment), then add around half an inch of water with some food coloring. Mix it all and start squeezing the water out. The clay should be wet but not dripping in excess liquid.

One good way to keep your work surface clean when using modeling clay is to put a cookie sheet or something similar underneath it. That way, any time you squeeze the clay onto a flat surface, it will simply slide across the cookie sheet for easy cleanup.

Step Four: Fold the clay.

Fold the clay in half lengthwise to form a semi-circle and use a Xacto or other suitable blade to cut out two semicircles.

Step Five: Stack them.

Stack them one on top of the other with your mold, then wrap some aluminum foil around it all so that you can create something called a “slip cast.” You’ll want to ensure that all your wrappings are tight, so the clay doesn’t leak.

Step Six: Hang the Aluminum-foil Package

Hang the aluminum-foil package with the model onto a string and balance it in an oven at around 200 degrees Fahrenheit for about 45 minutes or until you can see bubbles forming inside the water seal. You’ll know when it is done because you’ll hear the water boiling.

Step Seven: Remove the Package

Remove the package from the oven and let it cool for at least an hour before opening a corner of the foil to pry out your new trombone model.Add imag

Techniques On How To Make A Trombone

Technique Two:

  1. Start by putting off the slide from the trombone and estimating its duration.
  2. Reduce 2 bits of canvas, each of which should be 1 inch longer. Those will shape the pinnacle and lower part of the trombone case.
  3. Utilizing the stitching system, stitch one aspect of the extra narrow, longer strip around the brink of one of the different bits of canvas.
  4. Reducing a chunk of foam elastic is an excellent way to healthy inside the case and unfold the base. Paste its installation.
  5. The quilt of the trombone case will play out a twofold obligation. Above all else, it will end the case, yet it will likewise maintain the slide.
  6. Spot the pinnacle on the trombone case. Then, stitch one of the extended aspects of the pinnacle to the element of the case.

Precautions While Making a Trombone:

  • Taping the barrel is a must as it will prevent you from accidentally cutting yourself if you come in contact with that part of the wood.
  • Sawing off parts of the dowel rod can be tricky, so it’s best for someone else to do this task!
  • Using a needle or screwdriver to poke holes into one side of each piston is also an important step. This technique helps the air flow more easily through these valves, creating sound when blown onto by blowing into it. Please make sure not to make any mistakes here because this could cause problems later on down the line, such as making all notes higher pitched than they are supposed to be.
 Make Sure Not to Make Any Mistakes

Check it out to learn to make a homemade trumpet with valves.


 By the end, we believe you have learned all the vital details of how to make a trombone. And as an outcome, now you can execute the entire work by simply following the steps mentioned in the earlier section of this article. Make sure you maintain the safety measurements; then, you are perfect to go.

You may also read – How To Remove Lacquer From Brass Instrument

Jennifer Branett
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