Trombone Slide Repair: Tips & Techniques

Trombone Slide Repair: Tips & Techniques

Trombone slides are delicate and prone to wear and tear. Over time, they can become misaligned, scratched, or even broken. If your trombone slide isn’t working properly, it can affect your playing. But don’t despair! With a little bit of care and attention, you can repair your slide and get it back in top condition.

Tools & Materials

Before you start any repair work, it’s important to have the right tools and materials. Here’s a list of what you’ll need:

  • A flathead screwdriver
  • A Phillips head screwdriver
  • A hammer
  • A block of wood
  • A small piece of sandpaper
  • A polishing cloth
  • Solder
  • Soldering iron
  • Flux

Straightening a Bent Slide

If your trombone slide is bent, you can straighten it using a hammer and a block of wood. Place the slide on the block of wood and gently tap the bent portion with the hammer. Be careful not to over-tighten the slide, as this could cause further damage.

Polishing a Scratched Slide

Scratches on your trombone slide can make it difficult to move smoothly. To polish a scratched slide, use a small piece of sandpaper and a polishing cloth. Gently rub the sandpaper over the scratches, then use the polishing cloth to remove any remaining debris.

Soldering a Broken Slide

If your trombone slide is broken, you can solder it back together. First, clean the broken ends of the slide with sandpaper. Then, apply flux to the broken ends and heat them with a soldering iron. Once the metal is hot enough, apply solder to the joint. Allow the solder to cool completely before using the slide.

Developing a Personal Philosophy for Instrument Repair

It’s important to develop a personal philosophy for instrument repair. This will help you make decisions about what repairs are necessary and how to approach them. Some things to consider include:

  • The age and condition of the instrument
  • The value of the instrument
  • Your own skill level
  • Your budget


Repairing a trombone slide can be a challenging but rewarding experience. By following these tips and techniques, you can keep your trombone in top condition and enjoy playing for many years to come.

Remember to always be careful when working with tools and materials. If you’re not comfortable repairing your slide yourself, take it to a qualified repair technician.