We adjust the repair according to your wishes and your trombone's needs. To give you an accurate estimate of the repair or service needed, our technicians need to inspect your trombone. This is free but requires that we have the instrument at hand. You are always welcome to visit our shop, send us an e-mail (with pictures and a description of the problem), or send us the instrument. Contact us if you need help with the shipping.




We control all solderings and give you a status of the trombone's general condition. 

  • Tuning slide is loosened 
  • Ultrasonic cleaning and descaling
  • Change of water key cork 
  • Valves are oiled and slides are lubricated
  • The trombone is test played

Cleaning and adjustment

If you want your trombone to live a long and happy life, we recommend you give it a yearly visit to our workshop to clean and adjust. 

  • Loosening of tuning slide
  • Ultrasonic cleaning and descaling
  • Change of water key cork and spring
  • Fine adjustment of valve
  • Slides and valve are oiled and lubricated
  • Smaller dents on the bell are removed
  • The trombone is test played

Cleaning and individual adjustment 

The individual adjustment includes a regular clean and adjust, and a personal session with our brass technician

  • External polishing
  • All dents are removed
  • Slide is aligned 
  • Individual session with our brass technician, where intonation, resistance, and timbre are adjusted according to your wishes.

We can also fix this:

  • Dents 
  • Loosening of the mouthpiece 
  • Silver/gold plating
  • Valve alignment
  • Re-lacquer
  • Solderings 
  • Various re-builds and repairs 



Repairs are invoiced per initiated half hour. We are happy to give you an estimate of the cost, but cannot always foresee the full extent of the repair before we start working on the instrument. 

Ultrasonic cleaning -what is it?

Have you bought an instrument that you really love? With ultrasonic cleaning, your instrument is cleaned thoroughly and gently in a bath of water through ultrasonic soundwaves. This method spares the insides of your instrument the wear and tear usually inflicted by traditional brush cleaning.


Grease for slides and cork. A popular cork grease from La Tromba.  

Content 15 gr


Guarantee workshop for:  

Several manufacturers have chosen i.K.Gottfried as their Danish guarantee workshop, which gives us the opportunity to assess damages and make repairs covered by the instrument warranty. As a guarantee workshop we can easily help you, if you have discovered a flaw in your instrument. 


Get an estimate

Getting an estimate of the repair is free, but it is impossible for us to estimate a job without inspecting the instrument physically. That is why repairs estimated over the phone or e-mail is not binding until we confirm it upon receiving the instrument. You can reach us in the following ways: 


Call us on 
+45 3311 1047

Click for opening hours


Visit our store  
Kronprinsessegade 44C

1306 København K.

Click for opening hours

  Send us an e-mail at


We try to reply as quickly as possible, but at times it can take us 1-2 workdays to get back to you.